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Tropical Asia

Tropical Asia comprises the tropical zones of the Asian landmass and associated islands, extending from the Indian subcontinent eastward through mainland Southeast Asia to the archipelagos of Indonesia, the Philippines, and parts of New Guinea, encompassing countries such as India, Bangladesh, Myanmar, Thailand, Vietnam, Malaysia, Indonesia, and the Philippines.^[1]^[2] This region is defined by its predominantly low-lying topography interspersed with mountain ranges and river deltas, supporting warm, seasonally humid climates influenced by monsoons that deliver high annual rainfall exceeding 700 mm in many areas.^[1]^[3] Ecologically, it hosts exceptional biodiversity, including unique vertebrate groups like gibbons, tree shrews, and diverse squirrels, alongside vast tropical forests that rank among the world's richest in plant species, with hotspots concentrated in Sundaland and the Philippines.^[4]^[5] The region's physiographic diversity—from coastal mangroves and peat swamps to montane forests—underpins its role as a global center for crop domestication and natural resource extraction, driving economies reliant on rice, rubber, palm oil, and timber production.^[2] With a population exceeding 2 billion as of recent estimates, concentrated in fertile lowlands and urbanizing coastal zones, Tropical Asia faces intensifying pressures from demographic expansion and land conversion for agriculture, which has led to substantial forest loss, particularly in Southeast Asia where over half of original cover has been cleared.^[2]^[6] Deforestation rates, fueled by demand for commodities like palm oil and uncontrolled rural-to-urban migration, threaten endemic species and exacerbate soil erosion and flooding, though some areas show slowing trends linked to rising GDP and policy interventions.^[7]^[8]^[9] Despite these challenges, Tropical Asia's tropical ecosystems continue to support dense herbaceous layers in savannas and dipterocarp-dominated rainforests, contributing disproportionately to global carbon sequestration and medicinal plant discoveries, while its archipelagic geography has historically promoted evolutionary divergence through isolation and sea-level fluctuations.^[3]^[5] Economic growth, averaging higher than other tropical regions, has lifted millions from poverty but correlates with habitat fragmentation, underscoring causal links between population density, resource demands, and environmental degradation absent robust conservation enforcement.^[10]^[11]

Definition and Scope

Geographical Boundaries

Tropical Asia is delineated by the astronomical tropics, extending from the Tropic of Cancer at approximately 23°26′ N latitude to the Tropic of Capricorn at 23°26′ S, though continental Asia's southern extent reaches only to about 11° S in Indonesia, confining the effective southern boundary to equatorial and northern tropical zones.^[12] This latitudinal range prioritizes empirical solar insolation patterns, where overhead solar positions occur year-round, distinguishing it from adjacent subtropical areas. Longitudinally, it spans from roughly 60° E in western peninsular India to 150° E across the Indonesian archipelago and Philippines, encompassing diverse island chains and mainland peninsulas without extending into temperate or arid extratropical Asia.^[1] The core area includes southern portions of South Asia—such as peninsular India south of 23.5° N and Sri Lanka—along with all of Southeast Asia's mainland and archipelagic territories, totaling an estimated 4 to 5 million km², or about 10-15% of Asia's 44.58 million km² landmass.^[13] ^[14] This excludes subtropical fringes like northern India (beyond 25° N) and Taiwan, which experience seasonal temperate influences despite partial overlap with tropical latitudes, to maintain delineation based on consistent high temperatures above 18° C year-round and minimal frost risk.^[1] This boundary aligns closely with the Indo-Malayan biogeographic realm, where tropical floral and faunal assemblages predominate, reinforcing the region's empirical coherence over arbitrary political divisions.^[15] Such definitions derive from geophysical and climatic first-principles rather than cultural constructs, ensuring focus on zones with shared solar-driven environmental dynamics.

Constituent Regions and Countries

Tropical Asia is divided into key subregions defined by geopolitical and climatic boundaries within the tropical zone, approximately between 23°26′N and the equator, encompassing mainland and insular territories east of the Indian subcontinent and south of mainland China. These include the tropical portions of the Indian subcontinent, the Indochinese Peninsula (mainland Southeast Asia), the Malay Archipelago (maritime Southeast Asia), and the Melanesian fringes around New Guinea.^[1]^[14] The tropical Indian subcontinent covers Bangladesh fully, Sri Lanka, and the southern Indian states below the Tropic of Cancer, such as Tamil Nadu, Kerala, Karnataka, Andhra Pradesh, and Telangana, spanning diverse coastal and inland tropics. Bangladesh, with its deltaic lowlands, and Sri Lanka, an insular extension, are wholly tropical, while India's included portion accounts for roughly 40% of its national land area but a significant share of its humid equatorial influences.^[16] The Indochinese Peninsula includes Myanmar, Thailand, Laos, Cambodia, Vietnam, and peninsular Malaysia, forming a contiguous mainland block characterized by riverine basins and karst highlands. These nations lie entirely or predominantly within tropical latitudes, with Vietnam's southern regions and Thailand's central plains exemplifying monsoonal tropics bounded by the Andaman Sea and South China Sea.^[14] The expansive Malay Archipelago constitutes the largest subregion by area, dominated by Indonesia—spanning over 17,000 islands and holding the greatest territorial extent in Tropical Asia—the Philippines, eastern Malaysia (including Sabah and Sarawak on Borneo), Brunei, and Singapore. Indonesia's core tropical islands, from Sumatra to Sulawesi, along with the Philippines' 7,600+ islands, define this fragmented, volcanically active zone. Timor-Leste is partially included as its eastern half aligns with tropical maritime boundaries.^[14] The Melanesian fringes incorporate Papua New Guinea, which includes the western half of New Guinea island and surrounding islets, marking the eastern limit of Tropical Asia's overlap with Oceanian tropics. This subregion features rugged montane and coastal ecosystems transitional to Pacific influences.^[17] Collectively, these areas house over 2.5 billion people as of 2025, driven by the populations of full countries like Indonesia (285 million), Bangladesh (estimated 175 million), and Vietnam (100 million), plus partial inclusions from India exceeding 500 million in tropical zones. Population densities vary starkly, with Java in Indonesia exceeding 1,100 people per km² due to fertile volcanic soils supporting intensive agriculture for 150 million residents, versus Borneo's under 30 per km² across its 743,000 km², limited by dense rainforests and rugged terrain housing only about 20 million.^[18]^[19]^[20]

Physical Geography

Topography and Landforms

Tropical Asia features a varied topography shaped by tectonic processes, including the collision of the Indian and Eurasian plates and subduction along the Pacific Ring of Fire, resulting in elevations ranging from sea-level deltas to peaks exceeding 4,000 meters. These landforms influence regional hydrology by serving as watersheds for major river systems and affect ecological productivity through soil formation, such as nutrient-rich volcanic deposits. The Sunda Shelf, a continental extension underlying much of Southeast Asia, was exposed as dry land during Pleistocene glacial maxima when sea levels dropped over 120 meters, connecting islands like Borneo, Sumatra, and Java into a contiguous landmass that facilitated faunal dispersal and shaped insular hydrology upon submergence.^[21]^[22] In mainland tropical Asia, the southern foothills of the Himalayas extend into tropical latitudes across northeastern India, Bangladesh, and Myanmar, with elevations typically below 1,000 meters in humid zones formed by ongoing tectonic uplift from plate collision initiated 40-50 million years ago. These foothills transition into fold mountains and give rise to rivers like the Brahmaputra, channeling sediment to vast deltas. Further southeast, the Annamite Chain along the Vietnam-Laos border rises to over 2,500 meters at peaks such as Phou Bia (2,819 meters) and Ngoc Linh (2,598 meters), comprising granitic massifs and sedimentary rocks that create rain-shadow effects on hydrology, with steep eastern escarpments feeding short coastal rivers and gentler western slopes draining into the Mekong system.^[23]^[24]^[25] Archipelagic portions exhibit pronounced volcanic and karst features due to subduction tectonics. Indonesia hosts 75 historically active volcanoes, contributing andesitic lavas and ash that weather into fertile alluvial soils supporting hydrological recharge in inter-volcanic basins. In eastern Indonesia and Papua, the highlands of New Guinea reach 4,884 meters at Puncak Jaya, part of a continuous cordillera exceeding 4,000 meters in places, formed by Australia-Pacific plate interactions and directing runoff to both northern and southern coasts. Karst landscapes, prevalent in limestone terrains of Vietnam (e.g., Phong Nha) and peninsular Malaysia, feature tower karst, sinkholes, and subterranean drainage that limit surface hydrology and create isolated aquifers.^[26]^[27]^[28]^[29]^[30]^[31]

Hydrology and Water Resources

The hydrology of Tropical Asia is dominated by large river systems originating from Himalayan and Southeast Asian highlands, with flows primarily driven by seasonal monsoons that deliver over 80% of annual precipitation between June and September, resulting in peak discharges during this period.^[32]^[33] These rivers, including the Mekong, Ganges-Brahmaputra, and Irrawaddy, transport vast volumes of water—key systems exceeding or approaching 500 km³ annually—supporting irrigation-dependent agriculture across alluvial plains where settlements have historically concentrated due to reliable water availability and flood-recession farming.^[34] The Mekong River, measuring 4,350 km in length, drains a 795,000 km² basin sustaining around 65 million people through fisheries and rice paddies, with a mean annual discharge of 475 km³.^[35]^[36]^[37] The Ganges-Brahmaputra-Meghna system, forming the world's largest delta spanning over 100,000 km², discharges approximately 1,260 km³ yearly (equivalent to an average 40,000 m³/s) but experiences extreme seasonal flooding, with monsoonal peaks amplifying erosion and deposition cycles.^[38]^[34] The Irrawaddy River, covering a 410,000 km² basin, adds 365 km³ annually, its flows peaking at over 35,000 m³/s in August-September to sustain Myanmar's central dry zone agriculture.^[39]^[40]^[41] Monsoon hydrology creates bimodal flow regimes, with low dry-season discharges (November-May) reliant on baseflow from aquifers, particularly in deltaic regions where groundwater extraction for irrigation exceeds recharge, heightening salinization risks from seawater intrusion and over-pumping—evident in the Mekong Delta where salinity fronts advance up to 90 km inland during droughts.^[42]^[43] These dynamics underpin water resource management, as dams and diversions increasingly alter natural variability, reducing peak flows by up to 20% in some basins while exacerbating dry-season shortages.^[44] Sediment transport, peaking concurrently with monsoonal floods, drives fertile alluvial soil formation through annual deposition; the Mekong alone delivers about 160 million tons of silt yearly, renewing delta topsoils at rates of 1-2 cm per decade and enabling high-yield cropping systems that anchor population densities exceeding 1,000 persons/km² in floodplains.^[44]^[45] This causal linkage—where silt loads correlate directly with soil nutrient replenishment and embankment stability—has historically facilitated settlement expansion, though recent dam-induced reductions (now trapping over 50% of sediments) threaten long-term soil productivity and delta aggradation.^[44]^[46]

Coastal and Insular Features

Tropical Asia's coastlines, shaped by tectonic subduction and fluvial sediment deposition, span extensive lengths across mainland and island margins, with major contributors including Indonesia's approximately 54,716 km and the Philippines' 36,289 km, contributing to regional totals exceeding 100,000 km when accounting for other nations like Vietnam and Thailand. These shorelines exhibit varied morphologies, from sandy beaches fringed by coral platforms to muddy deltas built by Ganges-Brahmaputra and Mekong river systems, where monsoon-enhanced currents distribute sediments that counteract subsidence in tectonically active zones. Exposure to Indian and Pacific Ocean influences results in dynamic coastal processes, including wave refraction around promontories and tidal amplification in enclosed embayments. Prominent among these features are coral reef systems, particularly in the Coral Triangle spanning Indonesia, the Philippines, Timor-Leste, Papua New Guinea, Solomon Islands, and Malaysia, where geophysical conditions of low-latitude sunlight, upwelling nutrients from subduction-related currents, and stable carbonate platforms support extensive reef growth over volcanic substrates. This region hosts 76% of global coral species, reflecting high habitat heterogeneity from atoll lagoons to fringing reefs on continental shelves, formed through gradual bio-erosion and accretion in oligotrophic waters. Adjacent mangrove ecosystems, comprising about 42% of the world's total extent, occupy intertidal mudflats along low-energy coasts from the Sundarbans to the Irrawaddy Delta, stabilized by pneumatophore root systems that trap fine sediments and mitigate wave energy in subsiding forelands. The insular geography dominates in eastern Tropical Asia, with over 25,000 islands in the combined Indonesian and Philippine archipelagos, primarily originating from Cenozoic subduction of the Indo-Australian and Philippine Sea plates beneath the Eurasian margin, generating volcanic island arcs and accretionary wedges along convergent boundaries. These subduction zones, part of the Pacific Ring of Fire, produce irregular coastlines with steep, cliffed shores on young islands and broader shelves on older terranes, influencing oceanic exposure through bathymetric barriers that shelter leeward bays from swell. Tidal dynamics vary markedly, with mixed semi-diurnal regimes in the open Andaman Sea giving way to meso-tidal ranges up to 9 meters in the funnel-shaped Gulf of Martaban within the Bay of Bengal, where shallow bathymetry and Coriolis effects amplify amplitudes from principal lunar constituents. Empirical observations indicate coastal vulnerability to erosion, with rates in deltaic fronts like the Mekong reaching several meters per year locally, exacerbated by recent sea-level rise of 3-4 mm annually since the 1990s, driven by thermal expansion and glacier melt. However, historical shoreline progradation has prevailed in sediment-rich systems, where annual accretion from river discharges—exceeding 300 million tons in the Ganges-Brahmaputra alone—has balanced tectonic subsidence and pre-industrial sea-level stability, maintaining net land gain in many areas until upstream damming altered fluxes. Such geophysical feedbacks underscore the region's resilience to gradual oceanic changes, though accelerating rise disrupts equilibrium in human-modified zones.

Climate Patterns

Monsoonal Dynamics

The monsoonal dynamics in Tropical Asia are primarily driven by the seasonal migration of the Intertropical Convergence Zone (ITCZ) northward across the equator during boreal summer, establishing the southwest monsoon from May to October as the dominant wet phase. This influx of moist southwesterly winds from the Indian Ocean accounts for 75-90% of annual rainfall in much of the region, with lowland precipitation totals commonly ranging from 2,000 to over 3,000 mm concentrated in these months.^[47]^[48]^[49] In opposition, the northeast winter monsoon from October to March transports relatively drier, cooler air masses from continental high-pressure systems over Asia, yielding subdued rainfall across interiors and western sectors while delivering localized precipitation to eastern coastal zones. Year-round average air temperatures hold steady between 25°C and 30°C, accompanied by relative humidity levels frequently above 80%, which intensifies atmospheric moisture availability and convective activity during the southwest phase.^[50]^[51] Observational records from key stations, such as Jakarta, underscore these cycles with southwest monsoon peaks exceeding 300 mm per month in January and February, directly modulating rice paddy planting schedules and heightening vulnerability to inundation in deltaic plains.^[52]

Regional Variations and Extremes

Tropical Asia exhibits significant regional deviations from a uniform equatorial climate, with equatorial zones like Indonesia displaying aseasonal rainfall patterns characterized by bimodal or trimodal distributions and minimal temperature variability, contrasting sharply with the pronounced seasonal aridity in peninsular India during non-monsoon periods.^[53] In Indonesia, annual rainfall often exceeds 2,000 mm with wet conditions persisting year-round due to the Intertropical Convergence Zone's influence, while southern India's tropical monsoon regime features dry spells from December to May, with rainfall concentrated in a June-September window averaging 600-1,000 mm but capable of extended deficits.^[54] These variations arise from differential monsoon penetration and orographic effects, with equatorial maritime influences buffering seasonality in insular Southeast Asia compared to the continental margins of South Asia. El Niño-Southern Oscillation (ENSO) events amplify these deviations, particularly through drought induction during strong El Niño phases, as seen in the 1997-1998 episode which triggered severe water deficits across Southeast Asia, including Indonesia where rainfall anomalies reached -50% in key regions, exacerbating forest fires and agricultural losses.^[55] In peninsular India and adjacent areas, the same event reduced monsoon rainfall by 20-30% in parts of southern states, linking to suppressed convection over the Indian Ocean.^[56] Such teleconnections disrupt Walker circulation, shifting precipitation southward and intensifying aridity in monsoon-dependent zones while occasionally enhancing it in equatorial cores. Extreme events underscore these variations, with tropical cyclones in the Bay of Bengal exemplifying destructive potential; Cyclone Mocha in May 2023, the strongest in the basin in a decade with winds up to 215 km/h, displaced over 500,000 people in Myanmar and Bangladesh through storm surges and flooding in vulnerable coastal and IDP areas.^[57] Heat extremes have also intensified in urban settings, where heat indices surpassed 52°C in Bangkok, Thailand, during April 2024 heatwaves, combining air temperatures above 40°C with high humidity to produce physiologically equivalent burdens exceeding 50°C across Southeast Asian cities.^[58] Flooding extremes, analogous in the subtropical fringes, include the 2022 Pakistan event where monsoon rainfall totaled 191% of the 30-year average, with multiday accumulations over 500 mm in Sindh province, inundating one-third of the country due to stalled low-pressure systems on saturated soils.^[59] Observational records indicate rising variability in temperature extremes and precipitation intensity across Tropical Asia, with IPCC AR6 assessments documenting increased frequency of heat events beyond 1850-1900 baselines and shifts toward wetter monsoons interspersed with droughts.^[60] However, historical precedents reveal comparable severity; northern China's early 20th-century droughts, often more prolonged than recent ones, triggered famines killing millions, while East Asian typhoon records from the 19th-20th centuries include events rivaling modern intensities in wind speeds and rainfall, underscoring natural multidecadal oscillations like Pacific Decadal Variability as longstanding drivers alongside any anthropogenic signals.^[61] These patterns, evident in proxy data from tree rings and sediments, demonstrate that while recent extremes align with observed trends, claims of unprecedented novelty overlook instrumental and paleoclimate archives spanning centuries.^[62]

Ecosystems and Biodiversity

Vegetation and Forest Types

Tropical Asia's vegetation is dominated by lowland dipterocarp rainforests, which feature tall emergent trees from the Dipterocarpaceae family adapted to high-rainfall environments through deep root systems and mast fruiting synchronized with El Niño cycles for predator satiation. These forests historically covered extensive areas in Southeast Asia, with dry deciduous dipterocarp variants spanning approximately 156,000 km² as of recent mapping, though broader lowland types formed the core of regional canopy structure.^[63]^[64] Peat swamp forests, prevalent in low-lying coastal zones like Sumatra, consist of stunted trees on waterlogged, acidic substrates, with adaptations including pneumatophores for oxygen uptake and tolerance to nutrient-poor conditions; these ecosystems store at least 30 Gt of carbon, underscoring their role as massive belowground reservoirs formed over millennia.^[65] In drier monsoon-influenced zones, seasonal deciduous forests prevail, characterized by trees that shed leaves during prolonged dry periods (3-8 months) to conserve water, transitioning to thorny scrub or grasslands under severe drought stress, with annual rainfall typically 600-2,000 mm.^[66]^[67] Forest cover in Tropical Asia has declined significantly, with Southeast Asia losing over half its original extent due to conversion pressures, contrasting with Asia-wide figures showing current coverage at about 32% of land area per FAO assessments, down from higher historical proportions estimated at 50% or more in pre-industrial baselines.^[6]^[68] Post-disturbance successional dynamics involve initial pioneer species colonization followed by gradual canopy closure, with logged forests recovering only 15-27% of reference height within 20 years, limited by soil degradation and altered microclimates.^[69] Fire-prone elements within these ecosystems, such as in transitional dry forests, have evolved alongside natural ignitions from lightning, which periodically clear understory and promote regeneration without reliance on anthropogenic sources alone, as evidenced by paleo-records spanning millennia.^[70]^[71] This contrasts with amplified modern fire regimes, but underscores inherent resilience to sporadic natural disturbances in maintaining community structure.^[72]

Fauna and Endemic Species

Tropical Asia's fauna encompasses a vast array of vertebrates and invertebrates, with Southeast Asia alone supporting over 2,000 bird species and approximately 500-700 mammal species, reflecting the region's role as a global biodiversity nexus.^[73]^[74] Megafauna include charismatic large mammals such as the Bornean orangutan (Pongo pygmaeus), with an estimated population of around 54,000 individuals primarily in Sabah and Kalimantan forests; the Sumatran orangutan (P. abelii), numbering about 14,000 in northern Sumatra; and the critically low tiger (Panthera tigris) populations across mainland Southeast Asia, totaling fewer than 500 individuals amid fragmented habitats from Thailand to Malaysia.^[75]^[76]^[77] Asian elephants (Elephas maximus), including the Borneo pygmy subspecies (E. m. borneensis), persist in densities of 1.1 to 6.3 individuals per km² as revealed by camera-trap surveys in varied vegetation types like shrub and forest.^[78] Endemism rates are particularly elevated in transitional zones like Wallacea, where roughly 40% of the 650 resident bird species—such as the Flores hawk-eagle (Nisaetus floris)—are unique to the region, alongside high proportions of endemic mammals including the Sulawesi bear cuscus (Ailurops ursinus).^[79] Reptiles and amphibians exhibit similar patterns, with Wallacea's isolation fostering distinct radiations; for instance, over 200 lizard species occur there, many confined to specific islands. The Javan rhinoceros (Rhinoceros sondaicus), one of the world's rarest large mammals, numbers approximately 50 individuals, all endemic to Ujung Kulon National Park on Java.^[80]^[81] Invertebrate diversity rivals vertebrates in scale, with Southeast Asia's tropical forests harboring thousands of insect species per hectare, including endemic butterflies like the Rajah Brooke's birdwing (Troides brookiana) in Borneo and hyper-diverse beetle assemblages exceeding 10,000 described species regionally. Empirical inventories underscore this richness, though undescribed taxa likely number in the hundreds of thousands, driven by habitat heterogeneity from rainforests to karsts. Poaching impacts are evident in megafauna declines, such as tiger numbers dropping to functional extinction in parts of Indochina by the early 2020s, quantified through occupancy models from camera traps.^[82]^[83]

Biodiversity Hotspots

Tropical Asia encompasses several globally recognized biodiversity hotspots, defined by exceptional species richness and endemism under criteria established by Conservation International, requiring at least 1,500 endemic vascular plant species or 0.5% of the world's endemic plants alongside significant habitat loss.^[84] The primary hotspots within this region are Indo-Burma and Sundaland, which together harbor disproportionate biological diversity relative to their land area, driven by historical geological isolation and climatic stability favoring speciation.^[85] These areas support over 38,500 vascular plant species collectively, with endemism rates exceeding 50% in many taxa, contributing substantially to Asia's status as a major center of plant diversity.^[86]^[87] The Indo-Burma hotspot, spanning northeastern India, Myanmar, Thailand, Laos, Cambodia, Vietnam, and southern China, contains approximately 13,500 vascular plant species, of which about 7,000 (52%) are endemic.^[88] It also hosts high animal endemism, including over half of its 380+ amphibian species being unique to the region, alongside nearly 600 globally threatened plant species.^[87] Sundaland, covering the Malay Peninsula, Sumatra, Java, Borneo, and associated islands, features around 25,000 vascular plant species, with 60% endemism, and supports 380 mammal species, over 170 of which are endemic, including critically endangered orangutans.^[86] Wallace's Line demarcates a biogeographic boundary east of Sundaland, separating Asian continental fauna from transitional Wallacean assemblages influenced by Australasian elements, resulting from deep marine barriers that limited faunal exchange during Pleistocene sea-level fluctuations and promoted allopatric speciation. This divide underscores causal mechanisms like vicariance and dispersal limitation, where tectonic isolation and mountain ranges in Indo-Burma further amplified evolutionary divergence.^[89] Conservation metrics highlight the irreplaceability of these hotspots, with many sites exhibiting vulnerability indices reflecting high threat levels from habitat loss, yet retaining unique assemblages not replicable elsewhere; for instance, Sundaland's endemic genera number at least 117 for plants alone.^[90] Tropical Asia's hotspots collectively account for a significant fraction of regional biodiversity, with plant diversity gradients peaking in these areas due to topographic heterogeneity and historical refugia during glacial cycles.^[91] Prioritizing protection here leverages empirical patterns of species accumulation, where endemism hotspots correlate with elevated speciation rates from geographic barriers.^[92]

Human Dimensions

Population Distribution and Growth

Tropical Asia, comprising the tropical latitudes of South and Southeast Asia, is home to over 2.5 billion people as of 2025, representing a significant portion of the continent's total population of approximately 4.8 billion.^[18]^[93] Population distribution exhibits stark gradients, with extreme concentrations in lowland river deltas and fertile plains contrasting sparse settlement in upland interiors and remote islands. For instance, the island of Java in Indonesia sustains densities exceeding 1,100 people per square kilometer, supporting over 150 million inhabitants amid limited arable land.^[94] River deltas, such as the Ganges-Brahmaputra and Mekong, amplify this pattern, hosting average densities around 880 people per square kilometer across Asian examples—2.6 times higher than surrounding low-lying coastal areas—due to historical agricultural productivity and alluvial soils.^[95]^[96] Annual population growth rates in the region range from 0.8% to 1.5%, reflecting a slowdown from higher mid-20th-century levels, with country-specific variations driven by differential fertility and migration.^[97] This translates to net additions of tens of millions yearly, sustaining momentum toward United Nations projections of regional totals approaching 3 billion by 2050 amid broader Asian growth to 5.3 billion.^[98] Urban-rural skew intensifies distribution pressures, with over 50% of the population urbanized by 2025—up from lower baselines in prior decades—fueled by internal migration toward coastal megacities for manufacturing and service jobs, leaving rural interiors relatively depopulated.^[99] Underlying these dynamics is a marked fertility transition, with total fertility rates dropping from around 5 children per woman in the 1960s to approximately 2.5 today, as evidenced in countries like Indonesia (from near 6 to under 3) and across broader Asian trends.^[100]^[101] This decline, corroborated by United Nations data, stems from improved education, contraceptive access, and economic shifts, tempering growth while straining urban infrastructure; censuses confirm decelerating rates since the 1990s, with sub-replacement fertility emerging in urban cores.^[102]

Settlement and Urbanization

Settlement patterns in Tropical Asia, encompassing much of Southeast Asia, reveal pronounced urban-rural divides, with over 50% of the ASEAN population residing in urban areas as of 2023, though rural regions retain substantial agricultural populations tied to resource-dependent economies.^[103] Urban concentrations cluster along coastlines and river deltas, leveraging access to ports for trade in commodities like palm oil, rubber, and fisheries, which serve as primary attractors for labor migration over ideological or policy-driven factors.^[104] Census data from national statistics agencies, corroborated by satellite imagery analysis, indicate that peri-urban expansion often engulfs adjacent farmlands, exacerbating divides by displacing smallholder farming communities toward marginal lands.^[105] Megacities dominate urbanization, with Jakarta's metropolitan area (Jabodetabek) supporting around 34 million residents in 2025 estimates, ranking among the world's largest continuous urban agglomerations.^[106] Metro Manila follows with approximately 14.8 million inhabitants in its core region by 2025, extending into sprawling suburbs that blend formal districts with expansive informal housing.^[107] These hubs, alongside Bangkok and Ho Chi Minh City, account for disproportionate shares of regional GDP through port-linked industries, drawing migrants from inland rural areas where subsistence agriculture prevails. Informal settlements within these megacities shelter 30-50% of urban dwellers, characterized by self-built structures on precarious tenure lands, as documented in urban vulnerability assessments.^[108] Urban expansion proceeds at annual rates of 2-3%, surpassing total population growth and fueled by economic pull factors such as resource processing hubs and export corridors rather than centralized planning alone.^[109] Satellite-derived land-use change analyses reveal that over 60% of new urban footprints originate from converted agricultural land across Southeast Asia, with peri-urban zones losing 1-2% of arable area yearly to residential and industrial sprawl. This pattern underscores causal drivers rooted in geographic advantages—proximity to maritime trade routes and extractable resources—enabling agglomeration economies that sustain high-density settlements despite environmental strains like subsidence in deltaic megacities.^[110] Rural depopulation accelerates as youth migrate to these nodes, widening divides and pressuring remaining farmlands to intensify output amid shrinking extents.^[111]

Public Health and Disease Prevalence

In the WHO South-East Asia Region, encompassing much of Tropical Asia, average life expectancy at birth reached approximately 71-75 years by 2023, with variations such as 84 years in Singapore and upper-70s in Thailand and Malaysia, reflecting improvements in healthcare access amid persistent rural-urban disparities.^[112] Infant mortality rates ranged from 2 deaths per 1,000 live births in Singapore to 34 in Myanmar, with neonatal deaths accounting for 52% of under-five mortality, primarily due to preterm birth complications and infections linked to poor sanitation.^[113] ^[114] Vector-borne diseases remain prevalent, though interventions have curbed malaria significantly; the region reported 1.5% of global cases in 2023, with India comprising half of these, following an 80% decline in deaths from 2000 levels through insecticide-treated nets and prompt diagnostics. ^[115] Dengue cases surged, with Southeast Asia seeing a 46% rise from 2015 to 2019 and over 1.6 million reported in Asia in 2023, often spiking in densely populated urban centers like Jakarta and Manila due to Aedes mosquito proliferation in stagnant water from inadequate waste management.^[116] ^[117] Nutritional challenges stem from rice-dominant diets, which provide high carbohydrates but deficiencies in protein, iron, zinc, and vitamin A, contributing to widespread anemia and stunting; vitamin A deficiency affects populations in Bangladesh and Indonesia, while iron shortfall heightens infection susceptibility in children.^[118] ^[119] These issues correlate strongly with poverty indicators, as low-income households in rural Tropical Asia face limited dietary diversity and micronutrient fortification.^[120] Empirical data from WHO underscore causal ties between disease burdens and socioeconomic factors like substandard sanitation and water access, rather than obsolete notions of tropical environmental determinism; for instance, poor water, sanitation, and hygiene (WASH) practices in Bangladesh elevate diarrheal and parasitic infections, exacerbating vector-borne risks in impoverished settings.^[121] ^[122] Improved sanitation coverage, from 40% in 2000 to over 70% by 2020 in select countries, has demonstrably reduced morbidity, highlighting poverty alleviation's direct impact on health outcomes.^[123]

Economic Foundations

Agriculture and Key Crops

Tropical Asia's agriculture is characterized by intensive rice paddy systems, which form the backbone of food security for hundreds of millions. Rice production in East and Southeast Asia, core to the region, accounted for 418.56 million tonnes in 2019, representing 55.4% of global output.^[124] Irrigated paddies enable double- or triple-cropping cycles, particularly in the Mekong Delta, Gangetic plains, and Java, where monsoon rains supplemented by canal and tube-well systems allow year-round cultivation on up to 24 million hectares.^[125]^[126] Smallholder farmers, operating plots averaging 1-2 hectares, dominate rice farming, relying on family labor and government-subsidized inputs, though yields vary widely from 3-6 tonnes per hectare due to soil fertility decline and water variability.^[127] The Green Revolution, starting in the 1960s, transformed productivity through semi-dwarf varieties like IR8, boosting average yields from 2 tonnes per hectare to 4 tonnes by the 1970s in countries such as Indonesia and the Philippines.^[128] Subsequent hybrid rice adoption has pushed potential yields to 5-7 tonnes per hectare in irrigated tropical lowlands, with experimental lines reaching 8-13 tonnes under controlled conditions, though national averages hover at 3-5 tonnes amid pest pressures and climate variability.^[129]^[126] Cash crops, particularly palm oil, drive export revenues, with Indonesia producing 50.07 million tonnes of crude palm oil in 2023 from over 16 million hectares.^[130] Oil palm yields 3-4 tonnes of oil per hectare annually—approximately 6-8 times higher than soybean's 0.4-0.5 tonnes—due to its perennial nature and efficient land use in equatorial climates.^[131]^[132] Plantations, often corporate-managed with hired labor, cover about 73% of oil palm area in Southeast Asia, outperforming smallholder plots in yields through mechanization and fertilizer application, yet smallholders supply 27% of output via schemes blending independent and nucleus estate models.^[133] This duality reflects policy shifts favoring smallholder integration since the 1980s to distribute economic gains, though plantations achieve higher efficiency on marginal lands.^[134]

Natural Resource Extraction

Tropical Asia's natural resource extraction is dominated by timber harvesting, mineral mining, and fisheries, with hydrocarbons playing a supporting role in offshore areas. These activities underpin economic output in countries like Indonesia, Malaysia, the Philippines, and Vietnam, where extraction sectors collectively contribute 10-20% to GDP in resource-dependent economies such as Indonesia's mining and forestry components.^[135]^[136] Timber harvesting from tropical rainforests and plantations yields substantial volumes, with Southeast Asia producing a significant portion of global tropical wood products; for example, regional illegal logging alone accounted for 219 million cubic meters in Indonesia between 1991 and 2014, indicating total harvests far exceed this amid ongoing enforcement efforts.^[6] In 2023, authorities seized over 1.3 million cubic meters of illegally harvested wood across Southeast Asia, highlighting the scale of extraction despite regulatory pressures.^[137] Indonesia and Malaysia lead production, with logs and sawnwood imports to major markets like China drawing heavily from these sources, totaling millions of cubic meters annually.^[138] Mineral mining focuses on nickel and copper, with Indonesia as the world's top nickel producer at 1.8 million metric tons in 2023, comprising 51% of global output from laterite deposits in Sulawesi and other islands.^[139] The country holds 21 million metric tons of nickel reserves, about 22% of known global totals, driving rapid expansion in mine output.^[140] Copper production reached approximately 1.1 million metric tons in 2024, primarily from the Grasberg mine, positioning Indonesia among the top global producers despite processing concentrate locally.^[141] Fisheries extraction centers on the Coral Triangle, encompassing Indonesia, the Philippines, Malaysia, Papua New Guinea, Solomon Islands, and Timor-Leste, which produced 19.1 million tons of capture fisheries and aquaculture in 2010, representing 11.3% of global totals.^[142] Coral reefs in the region yield an average of 15 tons of seafood per square kilometer annually when managed sustainably, though actual outputs are pressured by high demand.^[143] Approximately 30% of stocks in associated waters show signs of overfishing, with Indonesia reporting overexploited demersal fisheries in multiple management areas.^[144] Hydrocarbon extraction includes offshore oil and gas, notably in Indonesia's Natuna Sea, where the Natuna gas field holds an estimated 222 trillion cubic feet of gas in place, with proven reserves exceeding 46 trillion cubic feet.^[145]^[146] Production from blocks like Natuna Block A supplies billions of cubic meters annually via subsea pipelines.^[147]

Trade and Industrial Development

Tropical Asia, particularly Southeast Asia, has pursued export-oriented industrialization since the late 20th century, leveraging abundant natural resources, low-cost labor, and regional trade agreements to drive economic expansion. Key exports include palm oil, primarily from Indonesia and Malaysia, which together generated approximately $56 billion in 2024, with Indonesia accounting for $34.1 billion and Malaysia $22.3 billion.^[148] Electronics and textiles have also surged, with ASEAN-wide exports reaching $1.98 trillion in 2022, led by machinery and electrical equipment from Vietnam, Malaysia, and Thailand.^[149] Integration into the Association of Southeast Asian Nations (ASEAN), established in 1967, facilitated this through initiatives like the ASEAN Free Trade Area in 1992, reducing intra-regional tariffs and enhancing market access.^[150] ^[151] Foreign direct investment (FDI) has been instrumental in industrial development, with inflows to ASEAN hitting a record $230 billion in 2023, fueling manufacturing hubs in Vietnam and Thailand.^[152] Vietnam has emerged as a center for electronics assembly and textiles, attracting firms diversifying from China, while Thailand specializes in automotive parts and printed circuit boards, hosting over 180 such projects.^[153] ^[154] These hubs exploit comparative advantages in skilled labor and proximity to supply chains, contributing to export surpluses in processed goods.^[155] This strategy has propelled GDP per capita growth across the region, rising from under $1,000 on average in 1990 to over $4,000 by 2023 in major economies like Indonesia ($5,030), [Vietnam](/page/Vietnam) (4,810), and Thailand ($7,770).^[156] The shift from agrarian bases to manufacturing and value-added exports underscores causal drivers like labor-intensive assembly and resource processing efficiencies, though uneven distribution persists among countries.^[157]

Environmental Dynamics

Deforestation Drivers and Rates

Tropical Asia experienced net forest losses averaging 1.2 million hectares per year from 2010 to 2020, a decline from rates exceeding 2 million hectares annually in the 1990s, as derived from FAO Global Forest Resources Assessments and satellite monitoring data focused on the region's tropical zones.^[158] This slowdown reflects stabilized logging practices in some areas alongside offsetting afforestation, though gross deforestation persists at higher levels before netting out gains from plantations. Population growth exceeding 1.5% annually in Southeast Asia subregions correlates with intensified land conversion pressures, while global market demands for export commodities sustain clearance incentives.^[159] Agricultural expansion dominates as the leading driver, accounting for 40-73% of deforestation across Southeast Asia, primarily through establishment of palm oil and rubber plantations on converted peat and lowland forests.^[160] Commercial logging contributes 19-20%, often preceding agricultural incursions by creating access roads and degrading canopy cover, with satellite analyses confirming these patterns via tree cover loss metrics.^[161] In Indonesia, which represents over half of regional tropical forest extent, palm oil-linked deforestation averaged 32,000 hectares yearly from 2018 to 2022 but rose to an estimated 100,000 hectares in 2023 amid policy shifts favoring biofuel mandates and export recovery.^[162]^[163] Peatland drainage for agriculture exacerbates episodic fires, which combust accumulated organic matter and emit 1-2 gigatons of CO2 equivalent during major events, as observed in the 2015 El Niño-driven blazes across Indonesia and Malaysia.^[164] These fires, quantified through field measurements and emission factor models, release carbon stocks built over millennia, with drainage canals lowering water tables to enable planting but increasing flammability under dry conditions.^[165] Overall, these drivers stem from causal linkages between rising regional populations—nearing 700 million in tropical zones—and inelastic global demand for vegetable oils, channeling economic incentives toward rapid land-use shifts rather than sustained forest retention.^[166]

Conservation Initiatives and Outcomes

Approximately 27% of Indonesia's land area, a key component of tropical Asia's forested regions, is designated as protected areas as of 2023, including national parks like Gunung Leuser in Sumatra, which spans over 1 million hectares and safeguards critical habitats for species such as Sumatran tigers, orangutans, and elephants.^[167]^[168] Similar protections exist across Southeast Asia, where protected areas collectively cover around 15-20% of tropical forest lands, often established under national policies and international commitments like the Convention on Biological Diversity.^[169] These reserves aim to curb habitat loss through enforcement mechanisms, including patrols and legal designations, though implementation varies by site.^[170] Reforestation initiatives complement these protections, with Indonesia rehabilitating 217,900 hectares of forest in 2024, focusing on degraded areas within and adjacent to protected zones to enhance connectivity and viability.^[171] Anti-poaching efforts in reserves like Gunung Leuser have involved deploying wildlife protection teams, completing over 80 patrols covering nearly 5,000 kilometers in 2022 alone, contributing to localized stability in threatened populations.^[172] Certification schemes, such as the Roundtable on Sustainable Palm Oil (RSPO), have certified 5.2 million hectares of plantations by 2024, representing about 20% of global palm oil production primarily from Indonesia and Malaysia, with standards requiring no deforestation and biodiversity set-asides.^[173]^[174] Effectiveness metrics show mixed results: protected areas in Southeast Asia have reduced forest cover loss by up to three times compared to unprotected landscapes, with biodiversity persistence notably higher in well-enforced parks where species occupancy, such as for tigers, has increased by 30% in monitored Indian reserves over two decades through targeted conservation.^[169]^[175] Tiger populations in parts of tropical Asia, including stable or rising numbers in Sumatra's protected zones via intensified patrols, reflect gains from these measures, though overall regional trends lag behind India's doubling to 3,682 individuals by 2022.^[176]^[177] However, leakage effects persist, as displacement of deforestation to adjacent unprotected lands has undermined some gains, with 44 out of 80 studied Southeast Asian protected areas experiencing net forest loss despite protections.^[178]^[170] Enforcement gaps, including insufficient resources, limit broader viability, as evidenced by ongoing illegal activities in sites like Gunung Leuser.^[179]

Resource Management Controversies

In the palm oil sector, a central controversy revolves around its high land-use efficiency compared to alternatives like soybean, rapeseed, and sunflower oils, which yield approximately 0.47–0.8 tons of oil per hectare annually, versus 3.8–4 tons for palm oil, enabling it to meet global demand on far less land and potentially sparing habitats elsewhere.^[180]^[181] Critics, including environmental NGOs such as the WWF, highlight associated habitat fragmentation and biodiversity declines in Southeast Asian rainforests, where oil palm expansion has converted diverse ecosystems, though projections of severe losses often rely on models assuming continued unchecked expansion without certification or yield improvements.^[182]^[183] Empirical analyses indicate that outright boycotts risk displacing production to less efficient crops, exacerbating deforestation in regions like South America's soy frontiers, where EU imports link to substantial clearing—soy accounting for 47% of the EU's agriculture-driven imported deforestation—and over 70% of soy-related conversion in areas like Brazil's Cerrado tied to European demand.^[184]^[185]^[186] Proponents of development argue that such resource extraction has underpinned poverty alleviation across tropical Asia, with economic growth in palm-producing nations contributing to lifting over 500 million people out of extreme poverty region-wide from 1990 to 2020 through job creation and export revenues, countering NGO narratives that frame expansion as uniformly destructive without weighing these trade-offs.^[187]^[188] Economists emphasize that palm oil's productivity aligns with causal incentives for intensification over extensification, potentially reducing pressure on uncleared lands if paired with sustainable practices, whereas unsubstantiated claims of inevitable ecological collapse overlook data showing stabilized deforestation rates in certified plantations.^[180] Tensions also arise between indigenous communities' land rights and state-backed extraction projects, such as mining and palm concessions in Indonesia and Papua New Guinea, where governments prioritize national revenues—often exceeding billions annually—over free, prior, and informed consent (FPIC), leading to evictions and cultural disruptions documented in cases like nickel mining on Halmahera displacing forest-dependent groups.^[189]^[190] Indigenous advocates contend that such initiatives violate customary tenure, exacerbating vulnerabilities in territories comprising up to 20% of tropical Asian forests, while state actors cite sovereignty and development imperatives, revealing a core dispute over whether communal stewardship inherently precludes scaled resource use—a view unsupported by evidence of pre-industrial precedents where communities in regions like Borneo managed swidden agriculture and selective logging sustainably for centuries without systemic degradation.^[191]^[192] Overall, these debates underscore no intrinsic incompatibility between tropical ecology and development; historical patterns of adaptive resource use pre-industrialization demonstrate viability of balanced extraction, with modern controversies often amplified by selective framing that ignores efficiency gains and displacement risks, favoring instead verifiable metrics like yield data and poverty trajectories over alarmist projections.^[193]^[194]

Development Trajectories

Poverty Alleviation and Growth Metrics

Extreme poverty in Tropical Asia, encompassing much of South and Southeast Asia, has fallen from around 50% of the population in 1990 to under 10% by the early 2020s, based on World Bank estimates using the $2.15 daily threshold adjusted for purchasing power parity.^[195]^[196] This reduction reflects aggregate trends in South Asia, where rates dropped from over 50% to approximately 10%, and East Asia and the Pacific, including Southeast Asian nations, where extreme poverty headcounts plummeted from similar highs to near single digits, driven by sustained economic expansion rather than isolated aid efforts.^[197]^[198] Human Development Index (HDI) scores across Tropical Asian countries have similarly advanced, with regional averages in South Asia rising from about 0.43 in 1990 to 0.672 by 2023, and East Asia and the Pacific reaching 0.775, representing gains exceeding 50% in both areas.^[199]^[200] For instance, Vietnam's HDI increased from 0.475 to 0.726, Indonesia's from 0.529 to 0.705, and India's from 0.429 to 0.633 over the same period, reflecting improvements in life expectancy, education, and per capita income.^[201] Key drivers include resource exports, such as oil, natural gas, palm oil, and minerals from countries like Indonesia and Malaysia, which generated revenues to fund public investments in health and education infrastructure.^[202] Urbanization has also played a causal role, with rising urban populations correlating to higher incomes and lower poverty incidence, as migrants access manufacturing and service jobs that outpace rural agricultural yields.^[203]^[204] Empirical analyses link initial underdevelopment in tropical regions to ecological factors like disease burdens and nutrient-poor soils, yet these have been surmounted through institutional reforms and technologies such as high-yield crop varieties, expanded irrigation, and vector control programs, enabling productivity gains independent of geographic determinism.^[205]^[206] Trade liberalization further amplified these effects by integrating local economies into global markets, fostering structural shifts from subsistence farming to export industries.^[202]

Infrastructure and Adaptation Strategies

The Jakarta-Bandung high-speed railway, Indonesia's first such project spanning 142.3 kilometers and operating at speeds up to 350 km/h, commenced commercial operations on October 17, 2023, facilitating over 10 million passenger trips by mid-2025 and enhancing connectivity between major economic hubs.^[207] In the Mekong River Basin, operational hydropower projects across 88 dams in the Lower Mekong Basin have installed capacities exceeding 13,257 megawatts as of recent assessments, with additional dams under construction contributing to expanded energy generation for regional development.^[208] These initiatives reflect broader investments in transport and energy infrastructure to support economic integration and power needs in densely populated tropical zones. Adaptation strategies emphasize resilient built environments, including the deployment of flood barriers and levee reinforcements to mitigate rising sea levels and intensified monsoons; for instance, structural enhancements like heightened floodwalls have been prioritized in vulnerable delta regions to protect urban and agricultural assets.^[209] Agricultural adaptations incorporate drought-tolerant and flood-resistant crop varieties, such as early-maturing rice strains, which farmers in Southeast Asia have adopted to sustain yields amid variable precipitation patterns.^[210] Developing countries in Asia, including tropical regions, benefit from multilateral climate finance channeled through development banks, which reached a record $137 billion globally in the latest year reported, with a substantial portion directed toward adaptation in low- and middle-income economies facing heightened climate risks.^[211] These measures have demonstrably lowered vulnerability, as evidenced by cyclone-related mortality reductions exceeding 100-fold in coastal Bangladesh since 1970, dropping from approximately 500,000 deaths in the 1970 Bhola cyclone to around 4,200 in 2007 events, primarily attributable to expanded early warning systems and cyclone shelters.^[212] Similar improvements in forecasting and evacuation protocols across Southeast Asia have contributed to declining per-event fatalities despite increasing storm intensity, underscoring the efficacy of integrated infrastructure and preparedness in curbing human losses.^[213]

Future Projections and Uncertainties

Economic projections for Tropical Asia, encompassing Southeast Asia and adjacent tropical zones, indicate sustained GDP growth averaging approximately 4.5-5% annually through 2030, driven by manufacturing expansion, digital economies, and intra-regional trade, according to analyses from the Asian Development Bank and International Monetary Fund.^[214]^[215] This trajectory assumes continued policy reforms and infrastructure investments, potentially elevating the subregion's combined GDP to over $4 trillion by decade's end, with Indonesia leading at around $2 trillion.^[216] Population dynamics show growth decelerating toward stabilization in urbanizing areas, with fertility rates declining below replacement levels in countries like Thailand and parts of Indonesia by 2030, per United Nations medium-variant scenarios, though rural tropical zones may sustain higher densities due to agricultural dependencies.^[217] Forest cover in tropical Asia could stabilize or marginally expand under scenarios prioritizing agricultural intensification, such as Shared Socioeconomic Pathway 1 (SSP1), projecting a net gain of up to 19.6 million hectares by 2050 if crop yields rise through precision farming and reduced slash-and-burn practices.^[218] Innovations like genetically modified crops, which have demonstrated yield boosts of 20-30% in insect-resistant varieties adopted in India and the Philippines, offer causal mechanisms to alleviate land pressure by enhancing productivity on existing farmland, thereby mitigating expansion into primary forests.^[219] Empirical patterns from Bt cotton in Asia underscore this ingenuity, where adoption correlated with decreased pesticide use and stabilized arable land needs despite population pressures.^[220] Key uncertainties include amplified El Niño-Southern Oscillation (ENSO) variability, projected to intensify under warming scenarios, potentially disrupting monsoon reliability and agricultural outputs in the Maritime Continent and Indochina by 2030, with La Niña phases exacerbating flood risks in vulnerable lowlands.^[221] Policy enforcement remains pivotal, as in Indonesia's permanent moratorium on primary forest and peatland conversion, extended from 2019 instructions, which aims to cap annual deforestation at 325,000 hectares through 2030 but faces challenges from illicit logging and weak provincial implementation.^[222]^[223] While verifiable trends favor adaptive technologies over rigid ecological limits, geopolitical shifts in trade or enforcement lapses could alter these baselines, necessitating robust monitoring to discern causal drivers from noise.^[224]

References

[1]
Tropical Zones - an overview | ScienceDirect Topics
Tropical Asia is the region of mainly low-lying topography and warm, at least seasonally humid climates which extends from India to the Philippines and East ...
[2]
Tropical Asia - The Regional Impacts of Climate Change
Tropical Asia is physiographically diverse and ecologically rich in natural and crop-related biodiversity. The present total population of the region is ...
[3]
Savannahs of Asia: antiquity, biogeography, and an uncertain future
Sep 19, 2016 · Tropical Asia is dominated by monsoonal climates with mean annual rainfall of more than 700 mm. Consequently, Asian savannahs support dense and ...
[4]
What's so special about Asian tropical forests? - ResearchGate
Dec 10, 2007 · Among the vertebrates, gibbons, tree shrews, forest rhinoceroses and lowland bears are unique to Asia, as is the diversity of squirrels, ...
[5]
Island geography drives evolution of rattan palms in tropical Asian ...
Mar 13, 2025 · Tropical Asia is a hotspot of biodiversity, with approximately 50,000 species of plants alone. However, the role of dispersal versus ...<|separator|>
[6]
Deforestation in Southeast Asia: Causes and Solutions | Earth.Org
Mar 7, 2022 · Southeast Asia has lost more than half of its original forest cover, causing what some experts argue to be one of the most severe biodiversity loss crises.Missing: population | Show results with:population
[7]
Threats to Borneo forests | WWF - Panda.org
One of the biggest drivers of deforestation in the HoB and Kalimantan is the growth of oil palm plantations in response to global demand for palm oil, the most ...
[8]
The future of Southeast Asia's biodiversity: A crisis with a hopeful ...
Much of Southeast Asia has observed a recent slowing down of deforestation rates, and reforestation has occurred in some countries, linked to increasing GDP ( ...
[9]
Uncontrolled deforestation and population growth threaten a tropical ...
Aug 14, 2024 · Uncontrolled migration and rapid population growth fuel deforestation and threaten natural resources.<|control11|><|separator|>
[10]
Chapter I.1 Characteristics of the Asia-Pacific region
The region is characterized by a larger population and stronger economic growth than any other, a rich diversity of both socio-economic and natural environment, ...
[11]
Population Dynamics and Tropical Deforestation: State of the ...
At the local scale, the site of forest conversion, deforestation is positively related to population growth, while the overall decline in rural population is a ...
[12]
Tropics - National Geographic Education
Oct 19, 2023 · The tropics are warm all year, averaging 25 to 28 degrees Celsius (77 to 82 degrees Fahrenheit). This is because the tropics get more exposure to the sun.
[13]
Top 7 Largest Continents in the World - WhiteClouds
Size: Asia is the Earth's largest continent, covering approximately 44.58 million square kilometers (or about 17.21 million square miles), which is about 30% of ...
[14]
Southeast Asia | Map, Islands, Countries, Culture, & Facts | Britannica
Southeast Asia, vast region of Asia situated east of the Indian subcontinent and south of China. It consists of two dissimilar portions.Mainland Southeast Asia · Economy · People · Plant life
[15]
Indomalaya | Realm & Subrealms - One Earth
Malaysia & Western Indonesia subrealm. 3 bioregions ... Indomalaya and contains six ecoregions totaling approximately 74 million hectares of land area.Missing: km2 | Show results with:km2
[16]
What Are The Five Regions Of Asia? - World Atlas
May 15, 2025 · This region covers a total area of 7,356,459 square kilometers and has a population size of more than 1.69 billion, representing 22% of the ...Central Asia (tajikistan... · East Asia (china, Mongolia... · Southeast Asia (brunei...<|separator|>
[17]
Mainland Southeast Asia - an overview | ScienceDirect Topics
The Malay Peninsula, Malay archipelago, and New Guinea. Biogeographically, this combines Sundaland, Wallacea (including the Phillipines), and New Guinea.<|separator|>
[18]
Asia Population (2025) - Worldometer
The current population of Asia is 4,844,242,827 as of Sunday, October 26, 2025 based on Worldometer's elaboration of the latest United Nations data. Asia ...
[19]
Asian Countries by Population (2025) - Worldometer
Asian Countries by Population (2025) ; 1, India, 1,463,865,525 ; 2, China, 1,416,096,094 ; 3, Indonesia, 285,721,236 ; 4, Pakistan, 255,219,554 ...
[20]
Why is Java So Weird? - by Tomas Pueyo - Uncharted Territories
Jan 24, 2023 · Compared to its big neighboring islands, it's 8x more densely populated than Sumatra and 30x more than Borneo1!
[21]
Prehistoric human migration between Sundaland and South Asia ...
Feb 4, 2023 · Rapid sea-level rise between the Last Glacial Maximum (LGM) and the mid-Holocene transformed the Southeast Asian coastal landscape, ...
[22]
Subsiding Sundaland | Geology - GeoScienceWorld
Jan 4, 2019 · Active tectonics in the central part of the Sunda shelf is currently almost null (Fig. 1A), making transient dynamic topography, triggered by ...Missing: ice | Show results with:ice
[23]
The Himalayas [This Dynamic Earth, USGS]
Jul 11, 2025 · This immense mountain range began to form between 40 and 50 million years ago, when two large landmasses, India and Eurasia, driven by plate movement, collided.
[24]
Tower Karst of Peninsular Thailand - SIUE
The most spectacular examples of tower karst occur in the monsoon area of Southeast Asia, including the Malayan Archipelago and Indonesia. China contains ...
[25]
Southern Annamites Montane Rainforests | One Earth
The Kontum Massif with its exposed granitic basement rock extends for 250 km from north to south, rising to Ngoc Linh at 2,598 m elevation. To the south the ...
[26]
Indonesia and the United States team up to reduce impacts from ...
With 75 historically active volcanoes, Indonesia is the world's most volcanically active nation.
[27]
Indonesia Volcanoes - Global Volcanism Program
Indonesia has 101 Holocene volcanoes. Note that as a scientific organization we provide these listings for informational purposes only, ...
[28]
BRIN outlines unique geology of last ice age in Sundaland
Mar 25, 2024 · The speed of the Indo-Australian plate's movement is around 70 millimeters per year, and that of the Pacific plate is 120 millimeters per year.
[29]
https://www.britannica.com/place/New-Guinea
[30]
(PDF) Karst in Southeast Asia - ResearchGate
Jan 15, 2019 · Karst is found in Malaysia, the Philippines, Thailand, Brunei, Indonesia, Cambodia, Viet Nam, Lao PDR, and Papua New Guinea.
[31]
The Emerald Isles of Hạ Long Bay - NASA Earth Observatory
May 6, 2022 · These landscapes have distinctive features such as sinking streams, sinkholes, caves, springs, and fluted rock outcrops. Hạ Long Bay and nearby ...
[32]
Historical and Projected Future Hydrological Characteristics of the ...
Seasonal variations result in low flow during the dry season (January–April) and increased salinity levels, while rainfall during the wet season (June–September) ...
[33]
Decoding the drivers of bank erosion on the Mekong river: The roles ...
Mar 26, 2013 · The tropical monsoonal climate generates a mean annual runoff of 475 km3 [Mekong River Commission (MRC), 2005] and a mean annual sediment ...
[34]
List of rivers by discharge - Wikipedia
Largest rivers in the world by volume discharge: River, Average discharge (km3/year) at mouth. 01 Amazon. 7,152.8. 02 Ganges–Brahmaputra. 1,420.98. 03 Congo.Discharge (hydrology) · Madeira River · Fly River · Salween River
[35]
Seasonal reconstructions of Brahmaputra River discharge and ...
The Ganges-Brahmaputra-Meghna river system is the third largest in the world with an annual discharge of approximately 40,000m3/s. The Brahmaputra alone ...Missing: km3 delta
[36]
Mekong River - Mekong Basin - Tracking Change
The Mekong River is 4,350 km long, draining 795,000 km2, crossing six countries, and is vital for fisheries and has 60+ million people.
[37]
Geography - Mekong River Commission
The river basin drains a total land area of 795,000 km2 and has a mean annual discharge of 475 km3 , the tenth largest in the world. The Mekong River Basin ...
[38]
The Mekong
The average mean discharge for the Greater Mekong Basin is about 460 km3 of water annually, making it 10th in water volume in the world. Approximately 60-65 ...Missing: load tons
[39]
Coastal Flooding in Asian Megadeltas: Recent Advances, Persistent ...
Dec 16, 2024 · The seasonal variation in river discharge (Figure 3a) of the Ganges-Brahmaputra-Meghna (annual average: ∼40,000 m3/s, Papa et al., 2010) and ...
[40]
Effects of different precipitation inputs on streamflow simulation in ...
The total drainage area of the basin is approximately 410,000 km2. The Irrawaddy River (∼2100 km) is the most important commercial waterway in Myanmar. It ...
[41]
The Ayeyarwady River (Myanmar): Washload transport and its ... - NIH
May 13, 2021 · The mean annual discharge from 2000 to 2016 was 365 km3 y-1 (11,600 m3 s-1). The discharge reaches an average wet-season maximum of 3.9 104 m3 s ...
[42]
Discharge and suspended sediment transport in the Ayeyarwady ...
Aug 9, 2025 · Discharge is highest (average 35,000 m 3 /s) during the monsoon season (August and September) and lowest (average 4000 m 3 /s) in the dry season ...
[43]
Saltwater intrusion into groundwater systems in the Mekong Delta ...
Saltwater intrusion into surface water and groundwater systems has grown to be a detrimental issue recently, seriously threatening freshwater supply and ...Missing: peak | Show results with:peak
[44]
What drives changes in surface water salinity in coastal Bangladesh?
Apr 16, 2024 · Abrupt increases in surface water salinity are observed throughout the coastal region in response to variations in upstream river discharge.
[45]
Dams on the Mekong: Cumulative sediment starvation - AGU Journals
Jun 9, 2014 · The predam sediment flux of the Mekong River into the South China Sea has been estimated at approximately 160 million tonnes per year (Mt yr−1), ...
[46]
The Sediment Load of the Mekong River - ScienceDirect
The depositional record in the Mekong Delta indicates a long-term average sediment flux (over the past 3 ka) of 144 ± 34 million tonnes/year(MT/y) (Ta et al., ...
[47]
[PDF] THE SANDS ARE RUNNING OUT - WWF-UK
The natural annual sediment discharge from the river is estimated at 160 million tonnes. 1 Today, Mekong river basin dams already trap more than half of this ...
[48]
Monsoons, ITCZs, and the Concept of the Global Monsoon - 2020
Oct 30, 2020 · This results from the seasonal variation of the global tropical atmospheric overturning and migration of the associated convergence zone.Introduction · Idealized Modeling of Tropical... · Interpreting Observations and...
[49]
Above normal rainfall is forecast for southwest monsoon in Asia
May 6, 2025 · From June through September, the Southwest Monsoon dominates life in much of South Asia. Accounting for 75-90 per cent of the annual rainfall in ...
[50]
Average Precipitation by Country | Asia - Trading Economics
Average Precipitation by Country | Asia ; Philippines, 2768, 2603, Dec/24, mm ; Singapore, 2757, 2825, Dec/24, mm.
[51]
The Northeast Winter Monsoon over the Indian Subcontinent and ...
The northeast monsoon (NEM) brings the bulk of annual rainfall to southeastern peninsular India, Sri Lanka, and the neighboring Southeast Asian countries.
[52]
Climate of Singapore - Weather Information Portal
Singapore is situated near the equator and has a typically tropical climate, with abundant rainfall, high and uniform temperatures, and high humidity all ...<|control11|><|separator|>
[53]
Jakarta climate: weather by month, temperature, rain
It ranges from 1.8 inches in the driest month (August) to 11.8 inches in the wettest ones (January, February) Here is the average precipitation.
[54]
[PDF] CLIMATE VARIABILITY OF INDONESIA - Iklim BMKG
Indonesia has less temperatures variability from season to season. Indonesia's climate is also characterized by three rainfall patterns. They are monsoonal, ...
[55]
(a) The three distinctive climate sub‐regions over Indonesia (as...
This study details the independent seasonal impacts of the El Niño–Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) on rainfall extremes.
[56]
El Niño in 1997-1998: Impacts and CARE's Response - ReliefWeb
Jun 29, 1998 · ... drought in Southeast Asia has gradually weakened since April. The impact of El Niño has been particularly severe among the impoverished and ...
[57]
Impact of severe drought associated with the 1997–1998 El Niño in ...
Aug 9, 2025 · The impact of the unusually severe drought associated with the 1997–1998 El Niño on tropical forest dynamics in Sarawak, Malaysia was examined.
[58]
[PDF] Extremely Severe Tropical Cyclone Mocha, May 2023, Myanmar
Aug 10, 2023 · Internally Displaced Persons (IDPs) camps across Rakhine State, were devastated by the storm, leading to many deaths.
[59]
Southeast Asia heatwave: Thailand's heat index tops 52 degrees as ...
Apr 30, 2024 · Bangkok's heat index – a measure of how hot it feels like when humidity is taken into account – was listed as above 52 degrees Celsius (125 ...
[60]
Climate change likely increased extreme monsoon rainfall, flooding ...
Sep 14, 2022 · From mid-June until the end of August 2022, large parts of Pakistan experienced record-breaking monsoonal rainfall, leading to large parts of the country being ...
[61]
[PDF] Regional fact sheet - Asia
The observed mean surface temperature increase has clearly emerged out of the range of internal variability compared to 1850-1900. Heat extremes have increased ...Missing: historical precedents
[62]
Historical and recent change in extreme climate over East Asia - PMC
More severe and enduring droughts occurred in the early 20 th century or the earlier periods of history, frequently leading to great famines in northern China.
[63]
Chapter 10: Asia | Climate Change 2022: Impacts, Adaptation and ...
Asia is defined here as the land and territories of 51 countries/regions (Figure 10.1). It can be broadly divided into six sub-regions based on geographic ...<|separator|>
[64]
Mapping Threatened Dry Deciduous Dipterocarp Forest in South ...
Dec 1, 2014 · Approximately 156,000 km2 of DDF, defined as pixel with a fractional DDF cover of larger than 50 %, remain in SE Asia in the year 2011, making ...
[65]
Effects of climate change and land cover on the distributions of a ...
Jan 11, 2021 · Southeast Asian forests are dominated by the tree family Dipterocarpaceae ... dipterocarp species (6000–8000 km2) (Fig. 4a). In contrast ...
[66]
Status of Peatland Degradation and Development in Sumatra and ...
These peatlands are estimated to contain at least 30 Gt of carbon (Wahyunto et al. ... Carbon fluxes from a tropical peat swamp forest floor. Global Change ...
[67]
Tropical dry forest dynamics in the context of climate change
May 30, 2020 · Tropical dry forests (TDFs) occur in dryland environments, which are characterized by prolonged periods of dry months. They experience distinct ...Tropical Dry Forests: An... · Climate Change And Tdfs... · Managing Dry Forests Under A...<|separator|>
[68]
Tropical deciduous forest in Yunnan, southwestern China - NIH
Their climate has an annual mean temperature between 20 and 25 °C, annual precipitation of 600–1100 mm, and is characterized by a dry season of about six months ...Missing: zones | Show results with:zones
[69]
[PDF] Global Forest Resources Assessment 2020
Dec 11, 2020 · at 231 million ha (31 percent of the forest area), followed by. Asia, at 190 million ha (32 percent of the forest area). Only. FIGURE 26 ...
[70]
Human degradation of tropical moist forests is greater than ... - Nature
Jul 3, 2024 · We estimate that forest height decreases owing to selective logging and fire by 15% and 50%, respectively, with low rates of recovery even after 20 years.
[71]
A 3200‐year history of fire in a West Kalimantan, Indonesia, tropical ...
Jun 17, 2024 · Fire in rainforest has major short-term consequences for humans and wildlife by converting forest to fire-prone fern, shrub, and grass, but the ...
[72]
[PDF] The role and history of fire in tropical landscapes
Introduction. Globally, most landscape fires occur in the tropics and subtropics, where natural, lightning-caused fires have favoured the evolution of ...
[73]
The impacts of large-scale, low-intensity fires on the forests of ...
Dec 12, 2008 · Landscape-scale fires in continental and insular South-east Asia are widely believed to be detrimental to biodiversity within the region (e.g. ...<|control11|><|separator|>
[74]
Birds of Southeast Asia
There are an estimated 10,000 living species of bird, around one fifth of which occur in Southeast Asia. The greatest diversity occurs in lowland primary ...<|separator|>
[75]
Countries with the most mammal species - The Rainforest
Dec 26, 2023 · Total number of mammal species, by country ; 1, Indonesia, 777 ; 2, Brazil, 776 ; 3, China, 710 ; 4, Mexico, 582 ...
[76]
Orangutan range and population estimates - GRID-Arendal
Sumatran orangutans are estimated at 6,600, while Bornean orangutans are estimated at 54,000. Sumatran orangutans are critically endangered.
[77]
Sumatran Orangutan | World Wildlife Fund
Sumatran orangutan facts ; Population: 14,613 ; Scientific name: Pongo abelii ; Weight: 66–198 lbs. ; Height: 4–5 ft. ; Habitats: Tropical and subtropical moist ...
[78]
Coexisting with Just 4500 Wild Tigers - Panthera.org
Sep 2, 2024 · The Amur tiger population is estimated to be 400 and recovering in Far East Asia. Tiger populations in Southeast Asia, however, are declining.
[79]
Estimating elephant density using motion‐sensitive cameras ...
Mar 14, 2022 · Elephants were captured in 16 locations. Density estimates varied between vegetation types, with estimates ranging from 6.27/km2 in shrub, 1.1/ ...
[80]
Wallacea - Species | CEPF
There are about 650 regularly occurring bird species in the hotspot, roughly 40 percent of which are endemic. Endemism is significant at the level of ...
[81]
Javan rhino numbers plunge; Sumatran rhinos remain near extinction
Aug 13, 2025 · Javan rhino (Rhinoceros sondaicus) numbers have dropped by a third, from 76 animals to just 50 after local poaching groups allegedly wiped out ...
[82]
Report: Global Rhino Count Shows Javan Rhinos Dwindling in ...
Aug 7, 2025 · Javan rhinos declined from an estimated 76 to approximately 50, due entirely to heavy poaching losses. The Sumatran rhino population remained ...
[83]
Science Talk: Beyond bees and butterflies – why South-east Asia ...
Mar 31, 2025 · South-east Asia is home to incredible insect biodiversity, from the tiny lace bug in Singapore to the Rajah Brooke's Birdwing in Malaysia. Yet, ...
[84]
Can Southeast Asia's Tigers Break Free? The Connectivity ...
Jun 11, 2025 · 2023). The estimated global tiger population has risen following population recovery and expansion in several areas (Harihar et al. 2017; ...
[85]
What Are Biodiversity Hotspots? | Conservation International
These areas are the biodiversity hotspots, 36 regions where success in conserving species can have an enormous impact in securing our global biodiversity. The ...
[86]
Hotspots | CEPF
CEPF grantees work in developing and transitional countries in the world's biodiversity hotspots—some of Earth's most biologically diverse yet threatened ...
[87]
Sundaland | CEPF
... species of vascular plants, 60 percent of which are endemic. Some 380 mammal species are found here, including two species of orangutans: the Critically ...
[88]
Indo-Burma - Species | CEPF
There are nearly 600 globally threatened plant species in Indo-Burma, out of a total of almost 1,300 globally threatened species in the hotspot. However, this ...
[89]
View of Key Biodiversity Areas in the Indo-Burma Hotspot
A conservative estimate of total plant diversity in the hotspot reveals about 13,500 vascular plant species, of which about 7,000 (52 percent) are endemic (van ...
[90]
Wallace Line - Wikipedia
It separates the biogeographic realms of Asia and 'Wallacea', a transitional zone between Asia and Australia formerly also called the Malay Archipelago and ...Australasian realm · Lombok Strait · Max Carl Wilhelm Weber · Richard LydekkerMissing: tropical | Show results with:tropical
[91]
Invisible barrier that runs through Indonesia finally explained by ...
Jul 24, 2023 · Researchers now believe that the uneven distribution of species across the Wallace Line was caused by extreme climate change.
[92]
Sundaland - Species | CEPF
There are at least 117 endemic plant genera in the hotspot; 59 of these ... Of Sundaland's more than 380 mammal species, more 170 are endemic to the hotspot.
[93]
The distribution of biodiversity richness in the tropics - Science
Tropical Asia is likely to be proportionately richest in plant diversity, and for biodiversity in general, for its size.
[94]
Severe human pressures in the Sundaland biodiversity hotspot
Jan 25, 2020 · As a result, Sundaland harbors over 15,000 endemic plant species, 115 endemic mammal species and 138 endemic bird species (Brooks et al., 2002).
[95]
Asia Population 2025 - World Population Review
The estimated population for Asia is 4,977,954,915. 4,977,954,915. Total Population. 101.10/km². Density.
[96]
Name a region more densely populated than Java - Reddit
Oct 13, 2024 · Virtually exactly the same population density as Java, both ~1,000 people/km2 . The Pearl River Delta specifically would also win, but the ...Insane how 2% of the world population just chilling here - RedditRiver Deltas are some of most densely populated areas in the world.More results from www.reddit.comMissing: hotspots | Show results with:hotspots
[97]
Coastal flooding will disproportionately impact people on river deltas
Sep 29, 2020 · Using a new global dataset, we show that 339 million people lived on river deltas in 2017 and 89% of those people live in the same latitudinal ...Missing: hotspots java
[98]
Perilous Future for River Deltas - Geological Society of America
As of 2017, Asian deltas housed 262 million people, 77% of the global delta population, with an average population density of 880/km2. In contrast, the 672 non- ...Missing: hotspots java
[99]
Population growth (annual %) - East Asia & Pacific | Data
Population growth (annual %) - East Asia & Pacific. World Population Prospects, United Nations ( UN ), note: Derived from total population.Missing: tropical 1-2%
[100]
Asia - Population Reference Bureau
The region's population is projected to increase 10% by 2050—to 5.3 billion, up from 4.8 billion in 2024—but the pattern of future population change varies, ...
[101]
Cities and Urbanization in Asia: 12 Things to Know
Asian cities are growing rapidly. · By 2030, more than 55% of the population of Asia will be urban. · In many places, cities will merge together to create urban ...Missing: tropical | Show results with:tropical
[102]
Fertility Rate - Our World in Data
For example, total fertility rates in India have fallen from 5 to 2 births per woman since the 1970s. South Korea has seen a particularly rapid decline: from a ...
[103]
[PDF] Fertility Decline in Asia: Opportunities and Challenges Bhakta ...
Indonesia exhibited a remarkable decline in the total fertility rate from close to 6 children per woman in the 1960s to less than 3 in the 1990s. This is ...
[104]
[PDF] Asia-Pacific Population and Development Report 2023 - UN.org.
FIGUre 1.1 Population size by Asia-Pacific subregion and annual growth rate for Asia and the Pacific, 1950–2050 2. FIGUre 1.2 Estimated and projected annual ...
[105]
Urbanization Trends in Southeast Asia Transform the Region
Jan 14, 2025 · As of 2023, around 50% of the ASEAN population lives in urban areas, with substantial variations across countries.Missing: percentage | Show results with:percentage
[106]
Where Deforestation Leads to Urbanization - PubMed Central - NIH
Specifically, we suggest that urban growth is occurring fastest where cities have access to both rural export commodities and export corridors. We also show ...
[107]
The conversion of agricultural land in the peri-urban areas of Hanoi ...
In this paper, we examine the conversion of agricultural land to built-up land in Hanoi by using Landsat images (1993, 2000 and 2007).
[108]
Tokyo and Jakarta Dominate as the World's Largest Metros ...
9 may 2025 · Tokyo and Jakarta lead the world in metropolitan population size, with Tokyo topping the chart at 37.3 million people and Jakarta following closely with 33.5 ...
[109]
Population of Manila (Capital City of the Philippines)
Apr 8, 2025 · The total population of Metro Manila in 2025 is estimated at 14,75 million, based on data from PSA – Philippine Statistics Authority (13,48 million in 2020)
[110]
[PDF] SUSTAINABLE URBANIZATION IN ASIA - UN-Habitat
Economic factors remain the main drivers of the urbanisation process. Urban planning is the key to ensuring the sustainable development of Asian cities.
[111]
[PDF] Chapter 5 Urbanisation Wave and ASEAN Regional Agenda
Between 2015 and 2020, the total population of Southeast Asia is growing at an average annual rate of 1.02%, but the urban population is growing at 2.21%.
[112]
Coastal mega-cities in Asia: transformation, sustainability and ...
Coastal mega-cities in Asia have expanded rapidly and are heavily stressed from environmental perspectives. They have undergone momentous physical and ...
[113]
Socioeconomic outcomes of agricultural land use change in ...
Feb 18, 2022 · We systematically review cases of agricultural land use change in Southeast Asia to assess their socioeconomic outcomes and potential trade-off and synergies ...
[114]
https://www.theglobaleconomy.com/rankings/infant_mortality/South-East-Asia/
[115]
Child health SEARO - World Health Organization (WHO)
In the South-East Asia Region, around 52% of under-five mortality is contributed by deaths during the neonatal period. The most common causes of under-five ...
[116]
Infant mortality in South East Asia | TheGlobalEconomy.com
The highest value was in Burma (Myanmar): 34 deaths per 1000 live births and the lowest value was in Singapore: 2 deaths per 1000 live births.
[117]
India accounts for half of all estimated malaria cases in 2023 in ...
Dec 11, 2024 · The World Health Organisation's South East Asia Region contributes about 1.5% of the burden of malaria cases globally and India accounted ...
[118]
Dengue - SEARO - World Health Organization (WHO)
From 2015 to 2019, dengue cases in SEA region increased by 46% (from 451,442 to 658,301) whereas deaths decreased by 2% (from 1,584 to 1,555). A variety of ...
[119]
2023 marks the worst year for dengue cases with millions infected ...
In Asia, 1,622,405 cases and 3,637 deaths were reported, with a CFR of 0.22. We observed a statistically significant difference in the number of cases and ...
[120]
Rice consumption and nutrition problems in riceconsuming countries
Vitamin A deficiency is widespread in rice-consuming populations of tropical Asia (DeMaeyer, 1986). The most severely affected countries include Bangladesh, ...
[121]
Rice: a potential vehicle for micronutrient fortification
Jun 2, 2022 · Rice is deficit in iron (Fe) zinc (Zn) and these are important micronutrients for infants, men and women. Fortification of rice with iron and zinc would help ...<|separator|>
[122]
Mapping of nutrition policies and programs in South Asia towards ...
Sep 19, 2023 · South Asia continues to host the triple burden of child malnutrition with high levels of child undernutrition, hidden hunger (micronutrient ...
[123]
Water, sanitation, and hygiene (WASH) factors and the incidence of ...
The consequences of poor WASH scores are reflected in the high incidence of various infectious diseases in Bangladesh.
[124]
Neglected tropical diseases risk correlates with poverty and early ...
Apr 10, 2023 · In fact, poverty is usually associated with infectious disease risk and susceptibility [32, 33]. Low GDP has been linked to malaria, dengue, and ...
[125]
Burden of water, sanitation and hygiene related diseases in India
WASH-related diseases in India affect 5.7-6.9% of outpatient and hospital visits, with high out-of-pocket costs and community level factors contributing to ...
[126]
Spatio-temporal analysis of rice production and trade between ...
Mar 21, 2025 · In East and Southeast Asia, rice production was 418.56 million tonnes, covering 55.4% of global rice production in 2019 (Lin et al., 2022).
[127]
Rice yields in tropical/subtropical Asia exhibit large but opposing ...
Aug 9, 2010 · Yield varied substantially in the sample (5,182 ± 1,468 kg·ha−1; range = 288–10,838 kg·ha−1), as did weather (Table S2). An understanding of ...
[128]
Rice production systems in Asia | Gis Asie
While average paddy yields attain 5 to 6 tonnes per hectare and crop cycle in the wet season, they can reach up to ten or even twelve tonnes per hectare in the ...
[129]
Large Plantations versus Smallholdings in Southeast Asia
To examine this issue, we seek to bridge the recent literature on land grabbing with the long-established debate on the relation between large and small farms.
[130]
[PDF] THE IMPACT OF GREEN REVOLUTION ON RICE PRODUCTION IN ...
Its average yield was 4 tons per hectare, which far outweighed the yield of traditional varieties of 2 tons per hectare (Tran 2001). For a wider diffusion, IR8 ...<|separator|>
[131]
Breakthrough in improving yield potential could continue what the ...
The new OsSPL14 WFP allele-infused varieties produced 60 percent higher yield, resulting in 8 to 13 tons per hectare.
[132]
Palm Oil Industry Performance In 2023 & Prospects For 2024
Mar 1, 2024 · JAKARTA: The production of crude palm oil (CPO) in 2023 was projected to reach 50.07 million tons or an increase of 7.15% compared to that of ...
[133]
Palm Oil vs Olive, Sunflower, Canola & Soy Oil: Sustainability ...
Aug 14, 2025 · Palm oil is the undisputed leader here, yielding around 3–4 tonnes of oil per hectare annually – several times higher than sunflower, soybean, ...
[134]
The World's Most Productive And Land-Efficient Crop (2025) - PASPI
Unmatched Productivity Per Hectare · Oil Palm: 3.36 tons/hectare/year · Sunflower: 0.78 tons/hectare/year · Rapeseed: 0.74 tons/hectare/year · Soybean: 0.47 tons/ ...
[135]
High-resolution global map of smallholder and industrial closed ...
Mar 24, 2021 · The map shows 10m resolution oil palm plantations in 49 countries, 19.60 Mha, 72.7% industrial, 27.3% smallholder, mainly in Southeast Asia.
[136]
[PDF] Large Plantations versus Smallholdings in Southeast Asia
The paper examines the transition from large plantations to smallholders in Southeast Asia, focusing on rubber and palm oil, and the assumption that ...
[137]
Indonesia - Mining by the numbers, 2024 | S&P Global
Sep 18, 2024 · In 2023, it maintained its rank as the top-producing country of mined nickel, accounting for more than half of global production. The rapid ...
[138]
[PDF] 13. The Political Economy of Southeast Asia's Extractive Industries
This chapter analyzes the political economy of extractive industries in Southeast Asia, focusing on how governance and power struggles shape development ...
[139]
Forestry and Logging Market Size, Share & Trend Report 2033
Sep 11, 2025 · According to INTERPOL's 2023 Operation Silver Axe, authorities seized over 1.3 million cubic meters of illegally harvested wood across Southeast ...
[140]
[PDF] Tropical Timber Market Report - ITTO
Jul 31, 2024 · Data released by the General Administration of Customs showed that China's imports of logs and sawnwood stood at 5.99 million cubic metres in ...
[141]
Nickel facts - Natural Resources Canada
Jan 31, 2025 · Indonesia was the largest producer, accounting for 1.8 million tonnes or 51% of global output. Canada ranked sixth, contributing 5% of the ...<|separator|>
[142]
Nickel Production by Country 2025 - World Population Review
1. Indonesia. This country holds 21 tons of nickel in its reserves. This adds up to about 22% of the total worldwide supply known to humans.
[143]
Top 10 Copper Producers by Country | INN - Investing News Network
Feb 25, 2025 · Indonesia. Copper production: 1.1 million metric tons. In 2024, Indonesia produced 1.1 million metric tons of copper, passing the United ...
[144]
Fisheries in the Coral Triangle are Vitally Important, New Report Show
The study estimates that in 2010, the CT6 contributed 11.3% (19.1 million tons) to global capture fisheries and aquaculture production. The 69% of production ...Missing: yield | Show results with:yield
[145]
Food - Coral Reef Alliance
If properly managed, coral reefs can yield an average of 15 tons of fish and other seafood per square kilometer (.4 square miles) per year.
[146]
[PDF] Economics of Fisheries and Aquaculture in the Coral Triangle
11.3% (19.1 million tons [t]) to global capture fisheries and aquaculture production. ... coral reefs yield an average subsistence and cash value of SI ...
[147]
Publications | Indonesian Petroleum Association
The Natuna gas field is one of the world's largest natural gas accumulations with an estimated 222 TCF gas in-place (71% CO,).<|separator|>
[148]
Indonesia Considers an SEZ on Natuna: Investment Prospects ...
The Natuna Regency has at least 46 trillion cubic feet of proven natural gas reserves, making it one of the world's largest sources of untapped gas. Much of the ...
[149]
Natuna Gas Field - Greater Sarawak Basin - Offshore Technology
Aug 29, 2007 · The 640km Natuna transportation system is one of the world's longest subsea gas pipelines, delivering 3.4 billon cubic metres annually. The line ...
[150]
Malaysia vs Indonesia: Palm Oil Export Showdown 2024–25
May 19, 2025 · ... total value of Malaysia palm oil exports reached $22.3 billion in 2024. While Indonesia palm oil exports accounted for $34.1 billion in 2024 ...
[151]
Manufacturing Industry in Southeast Asia 2024 - 2025 - Source of Asia
Oct 22, 2024 · In 2022, ASEAN's exports reached US$1.98 trillion. Electronics and machinery led the way, mainly from Vietnam, Malaysia, and Thailand. Imports ...
[152]
History - ASEAN Main Portal
The Association of Southeast Asian Nations, or ASEAN, was established on 8 August 1967 in Bangkok, Thailand, with the signing of the ASEAN Declaration (Bangkok ...
[153]
What Is ASEAN? | Council on Foreign Relations
ASEAN has made some progress toward economic integration and free trade. In 1992, members created the ASEAN Free Trade Area (AFTA) with the goals of ...
[154]
ASEAN Economic Community 2025 and Foreign Direct Investment
Foreign direct investment (FDI) inflows to ASEAN reached a record $230 billion in 2023. The increase was marginal – less than 1 per cent.
[155]
Vietnam's Top Manufacturing Hotspots 2025 | JTM Asia
Oct 16, 2025 · This article maps out Vietnam's top manufacturing hotspots for 2025 via four lenses: the Northern Key Economic Region, the Southern Key Economic ...
[156]
Thailand becomes one of world's leading printed circuit board ...
Oct 13, 2025 · Bangkok (VNA) - Thailand is emerging as a major regional and global hub for printed circuit board (PCB) production, with 180 PCB projects worth ...
[157]
Thailand vs. Vietnam: Where Should You Move Your Manufacturing?
Apr 19, 2025 · Thailand and Vietnam have emerged as two of the top alternatives in Southeast Asia. Both countries offer cost-effective labor, improving infrastructure, and ...Missing: Tropical | Show results with:Tropical
[158]
World Economic Outlook (April 2025) - GDP per capita, current prices
U.S. dollars per capita ; Thailand. 7.77 thousand ; Indonesia. 5.03 thousand ; Philippines. 4.35 thousand ; Vietnam. 4.81 thousand ; Malaysia. 13.14 thousand.
[159]
Mapped: Southeast Asia's GDP Per Capita, by Country
May 8, 2024 · Ranked: Southeast Asian Countries by GDP Per Capita ; Malaysia, $13,310 ; Thailand, $7,810 ; Indonesia, $5,270 ; Vietnam, $4,620.
[160]
Deforestation and Forest Loss - Our World in Data
Between 2010 and 2020, the net loss in forests globally was 4.7 million hectares per year. However, deforestation rates were much higher. The UN FAO estimates ...The world has lost one-third of... · Forests and Deforestation · Drivers
[161]
https://www.sciencedirect.com/science/article/pii/S1462901125002588
[162]
[PDF] Forests in south-east Asia - European Parliament
In south-east. Asia as a whole, 73 % of deforestation is commodity-driven (permanent farming and – to a much smaller extent – mining), 19 % is due to logging ...
[163]
Drivers of deforestation and forest degradation between 1990 and ...
This reflects patterns where infrastructure development and logging potentially lead to degradation and ultimately open areas for agricultural development.
[164]
Trase: Indonesian palm oil exports and deforestation | SEI
Oct 8, 2024 · In 2018–2022, deforestation for industrial palm oil was 32,406 hectares per year – only 18% of its peak a decade earlier, in 2008–2012.
[165]
Palm oil deforestation makes comeback in Indonesia after decade ...
Feb 13, 2024 · Deforestation by the palm oil industry in Indonesia increased in 2023 for the second year in a row, bucking a decade of gradual decline.
[166]
Peat Fires Choking Southeast Asia Pose a New Threat to Global ...
Nov 19, 2015 · At 0.44 GtC, the Indonesian peat fires this season have emitted what took the entire Earth's tropical peatlands at least 22 years to accumulate.
[167]
Large variation in carbon dioxide emissions from tropical peat ...
Apr 25, 2024 · Therefore, drought enhances peat oxidation and increases the risk and severity of wildfires, which immediately emit large amounts of CO2 through ...
[168]
Deforestation Linked to Agriculture | Global Forest Review
Apr 4, 2024 · Forest replacement by oil palm is most prevalent in Southeast Asia ... deforestation to include the latest drivers data from Curtis et al.
[169]
[PDF] THE STATE OF - INDONESIA's FORESTS 2024
Indonesia targets 54.06 million hectares of terrestrial protected areas. As of 2023,. 51.67 million hectares, or 27.30 percent of. Indonesia's land area, are ...
[170]
Leuser - WCS Indonesia - Wildlife Conservation Society
Gunung Leuser National Park in Sumatra protects tigers, rhinos, elephants, and orangutans, with WCS efforts to stop poaching and conserve biodiversity.Missing: outcomes | Show results with:outcomes
[171]
Southeast Asian protected areas are effective in conserving forest ...
Dec 9, 2021 · Given that only 11% of protected areas in Southeast Asia had completed METT surveys, our results illustrate the need to scale-up protected area ...Missing: percentage | Show results with:percentage
[172]
Protected areas in SE Asia could do better with more resources ...
Sep 3, 2024 · As countries expand their protected areas to meet the ambitious goal of protecting 30% of land and sea by 2030, many newly established ...Missing: percentage | Show results with:percentage
[173]
Beyond quick fixes: Indonesia's race to restore forests and nature
Sep 13, 2025 · Reforestation also continues, with 217.9 thousand hectares rehabilitated in 2024, split between 71.3 thousand hectares within designated areas ...
[174]
Leuser Ecosystem Protection - 2022-23 Progress with Breaking News
Jan 20, 2025 · Eight Wildlife Protection Teams were deployed to patrol the BTMS area. In 2022, these WPTs completed 80 patrol missions, covering 4,947 km of ...Missing: outcomes | Show results with:outcomes
[175]
[PDF] The RSPO Impact Report 2024
Dec 23, 2024 · As the latest Impact Report reveals, certified oil palm area now spans 5.2 million hectares across 23 countries. RSPO Certification has ...
[176]
Global Trends of Sustainable Palm Oil and China's Pathway
Jun 25, 2025 · Meanwhile, the global supply of RSPO Certified Sustainable Palm Oil (CSPO) reached a record high of 16.1 million tonnes, accounting for 20.1% ...
[177]
Tiger recovery amid people and poverty - Science
Jan 30, 2025 · Tiger occupancy increased by 30% (at 2929 square kilometers per year) over the past two decades, leading to the largest global population ...
[178]
Study finds India doubled its tiger population in a decade and credits ...
Jan 30, 2025 · The number of tigers grew from an estimated 1,706 tigers in 2010 to around 3,682 in 2022, according to estimates by the National Tiger ...
[179]
Rigorous assessment of a unique tiger recovery in Southeast Asia ...
A sustained recovery of a wild tiger population has occurred between 2007 and 2023, in three reserves of Thailand.<|separator|>
[180]
Deforestation leakage undermines conservation value of tropical ...
Aug 18, 2020 · One potential negative outcome is leakage, whereby protected areas displace land-use activities harmful to conservation into adjacent areas.
[181]
Sumatran tiger protection needs more patrols, tougher penalties ...
May 15, 2025 · A new study on Sumatran tiger conservation in Indonesia's Gunung Leuser National Park underscores that poaching remains the top threat, ...
[182]
Can consumers understand that there is more to palm oil than ...
However, their yields are substantially lower than that of palm oil, with rapeseed producing at 0.8 t/ha and sunflower at 0.7 t/ha compared to 3.8 t/ha of palm ...
[183]
Which Of All Oil Crops Most Land-Efficient And Most Productive?
Jul 10, 2025 · Seen from land use and productivity, the oil palm is really amazing: Soybean: 0.47 ton oil/ha/year; Sunflower: 0.78 ton oil/ha/year; Rapeseed: ...
[184]
Palm Oil | WWF - Panda.org
In addition to beef, soy, and tropical timber, palm oil has been and continues to be a major driver of biodiversity loss. Palm oil grows best in low lying ...Missing: projections | Show results with:projections
[185]
[PDF] Ecological impacts of palm oil expansion in Indonesia
The consequences of this loss to biodiversity are devastating, as a single hectare of tropical rainforest in Indonesia harbors over 200 plant species.<|separator|>
[186]
Saying 'no' to palm oil would likely displace, not halt biodiversity loss
Jun 26, 2018 · The report found that palm oil is damaging global biodiversity, with 193 species assessed as threatened on the IUCN Red List affected, and ...Missing: evidence | Show results with:evidence
[187]
Towards more sustainability in the soy supply chain: How can EU ...
Soy is a major driver of deforestation and degradation in Latin America and accounts for 47 percent of the EU's imported deforestation from agricultural and ...
[188]
Extra time for deforestation: lessons for future EU environmental ...
Nov 14, 2024 · For example, in 2016, 70 percent of the deforestation and conversion associated with EU soy imports from South America took place in the Cerrado ...
[189]
Lifting 800 Million People Out of Poverty – New Report Looks at ...
Apr 1, 2022 · Over the past 40 years, China has lifted nearly 800 million people out of poverty, accounting for more than 75 percent of global poverty ...
[190]
The evolution of global poverty, 1990-2030 - Brookings Institution
Feb 2, 2022 · Strong economic growth drove poverty rates down to 77 million, or 6% of the population, in 2019. India will, however, experience a short-term ...
[191]
Resource extraction and infrastructure threaten forest cover ... - PNAS
Dec 3, 2018 · Mineral and hydrocarbon extraction and infrastructure are increasingly significant drivers of forest loss, greenhouse gas emissions, and threats to the rights ...Missing: controversies | Show results with:controversies
[192]
Equitable land-use policy? Indigenous peoples' resistance to mining ...
This empirical research examines two interrelated questions: how do Indigenous Peoples perceive centralized mining affecting their traditional forest rights.
[193]
Tropical forests as key sites of the “Anthropocene”: Past and present ...
Sep 27, 2021 · The authors highlight the critical role of both land- and sea-based food and resource procurement for long-term human survival. In doing so, ...
[194]
Indigenous rights rising in tropical forests, but big gaps remain
In the last twenty years, rights for indigenous forest dwellers have expanded significantly, according to a new report by the Rights and Resources Initiative ( ...
[195]
Historical socioecological transformations in the global tropics as an ...
Sep 27, 2021 · We compare the archetypal urban collapse of the Maya, in modern Belize, Guatemala, Honduras, and Mexico, during the 8th to 11th centuries CE, and the Khmer.
[196]
Hidden patterns of sustainable development in Asia with underlying ...
35 sustainability indices reduced into six hidden development dimensions (axes). The third dimension traded-off ecological integrity for economic performance.
[197]
Poverty Overview: Development news, research, data | World Bank
From 1990 to 2025, the total number of people worldwide living in extreme poverty declined from around 2.3 billion to around 831 million.Poverty and Equity Briefs · Poverty & Equity Assessments · Measuring PovertyMissing: Southeast | Show results with:Southeast
[198]
September 2024 global poverty update from the World Bank: revised ...
Sep 20, 2024 · This surge in extreme poverty was largely driven by South Asia, where extreme poverty increased by 2.4 percentage points, and by 1.27 percentage ...
[199]
Poverty Reduction in Asia and the Pacific: 12 Things to Know
Poverty remains highest in South Asia, at 83.2% in 1990 and 72.2% in 2008 ... poverty reduction, from 84.6% in 1990 to 29.8% in 2008. Source: ADB. 2012 ...
[200]
[PDF] The World Bank's New Poverty Data: Implications for the Asian ...
In Asia and the Pacific, extreme poverty ($1.25) decreased from 1.4 billion people in 1990 (52.3% of population surveyed) to 903.4 million (27.1%). However, ...
[201]
Human Development Index (HDI)
The HDI was created to emphasize that people and their capabilities should be the ultimate criteria for assessing the development of a country, not economic ...Documentation and downloads · Country Insights · The 2025 Human... · News
[202]
Is human development progress stagnating in Asia-Pacific? The ...
May 15, 2025 · From 1990 to 2023, East Asia and the Pacific surged to an HDI of 0.775, and South Asia reached 0.672, both registering gains exceeding 50%.
[203]
[PDF] Human Development Index trends, 1990–2023
The table shows Human Development Index (HDI) trends from 1990-2023, including HDI rank, change in rank, and average annual growth. Iceland had the highest HDI ...
[204]
[PDF] TRADE AND POVERTY REDUCTION: - World Trade Organization
Trade is a key driver of global growth and poverty reduction. An open global economy has created opportunities for hundreds of millions of people to lift ...
[205]
[PDF] Urban Poverty in Asia - Asian Development Bank
Country experiences are generally consistent with the view that a rising share of the population living in urban areas plays a positive role in overall poverty ...
[206]
(PDF) The Effect of Economic Growth and Urbanization on Poverty ...
Aug 9, 2025 · This article aims to measure the impact of economic growth and urbanization on poverty reduction in Vietnam, and verify whether economic growth and ...
[207]
[PDF] NBER WORKING PAPER SERIES TROPICS, GERMS, AND CROPS
The paper tests if endowments like tropics, germs, and crops directly affect development, or through institutions. It finds no direct effect other than through ...Missing: challenges | Show results with:challenges<|control11|><|separator|>
[208]
[PDF] Tropical Underdevelopment - Columbia Academic Commons
This paper reviews the distinctive development challenges faced by economies situated in tropical climates. Using geographic information system (GIS) mapping, ...
[209]
Over 10 mln passengers in total for Jakarta-Bandung HSR since ...
Jun 27, 2025 · The Jakarta-Bandung High-Speed Railway (HSR) has transported more than 10 million passengers as of Wednesday since it began operations on Oct. 17, 2023.
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Hydropower - Mekong River Commission
Across the LMB, 88 hydropower projects are operational, with an installed capacity exceeding 13,257 MW. An additional 20 projects are under construction, and 14 ...Missing: GW | Show results with:GW<|separator|>
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Comprehensive portfolio of adaptation measures to safeguard ...
Oct 17, 2025 · These measures range from structural modifications, such as the heightening of flood protection infrastructure (e.g., levees), to non-structural ...
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Diversification of agriculture practices as a response to climate ...
A primary adaptation strategy practiced by farmers refers to diversifying their agriculture practices, including early maturing crops, drought-tolerant variety, ...
[213]
Multilateral Development Banks Hit Record $137 Billion in Climate ...
Global climate finance by multilateral development banks increased by 10% last year, reaching a record $137 billion, with the majority directed to low- and ...<|separator|>
[214]
Reduced death rates from cyclones in Bangladesh - PubMed Central
Cyclone-related mortality in Bangladesh has declined by more than 100-fold over the past 40 years, from 500 000 deaths in 1970 to 4234 in 2007.
[215]
Factors of cyclone disaster deaths in coastal Bangladesh - PMC - NIH
Jul 20, 2023 · Deaths associated with TCs have remarkably reduced in many high risk countries including Bangladesh, a country that has experienced 50% of all ...
[216]
Economic Forecasts: Asian Development Outlook September 2025
Sep 4, 2025 · Southeast Asia. Projected growth for Southeast Asia is lowered. The subregional growth forecast is revised down to 4.3% for 2025 and 2026 ...
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Southeast Asia - IMF DataMapper
Real GDP growth. Annual percent change. 4.3 ; GDP, current prices. Billions of U.S. dollars. 4.17 ; GDP per capita, current prices. U.S. dollars per capita. 6.01.
[218]
Southeast Asia's GDP Outlook in 2030 By 2030 ... - Facebook
Sep 10, 2025 · According to the IMF, the region's combined GDP will be led by Indonesia, which is expected to surpass $2.07 trillion, cementing its role as the ...
[219]
[PDF] Southeast Asia and the Economics of Global Climate Stabilization
Figure 32: Energy Mix Projections under Climate Stabilization ... is characterized by rapid economic growth, increasing then declining trend of population growth ...
[220]
The future of Southeast Asia's forests | Nature Communications
Apr 23, 2019 · In this study, we aimed to develop spatially explicit forest cover change scenarios for Southeast Asia and to monitor potential future forest ...
[221]
The impact of Genetically Modified (GM) crops in modern agriculture
GM crops are promising to mitigate current and future problems in commercial agriculture, with proven case studies in Indian cotton and Australian canola.
[222]
Genetically modified Crops: Balancing safety, sustainability, and ...
The present review examines the safety assessment of genetically modified (GM) crops through analysis of regulatory frameworks, health and environmental ...
[223]
Projected ENSO teleconnection on the Southeast Asian climate ...
Nov 29, 2023 · Future projections suggest that the Philippines, Malay Peninsula, most of the Maritime Continent, and southern Indochina experience reduced ( ...
[224]
Indonesia Is Reducing Deforestation, but Problem Areas Remain
Jul 24, 2019 · It aims to limit annual deforestation to 325,000 hectares between 2020 and 2030. Several policies have contributed to the decline of ...
[225]
Indonesia's primary forest and peatland moratorium now permanent
Indonesia's president Joko Widodo recently signed an order for the moratorium on logging in primary forests and peatlands to be permanent.
[226]
Halting deforestation by 2030 – lessons from Indonesia? - LSE
Feb 22, 2022 · Regardless of the policies adopted to address deforestation, halting all deforestation by 2030 is a less likely outcome than a slowdown in the ...