Forest
A forest is land spanning more than 0.5 hectares with trees higher than 5 meters in situ and a canopy cover of more than 10 percent, excluding areas primarily used for agriculture or urban purposes.[1][2] This definition, adopted by the Food and Agriculture Organization of the United Nations (FAO) for global assessments, encompasses both natural stands and plantations intended for wood production.[2] As of 2020, forests covered 4.06 billion hectares worldwide, equivalent to 31 percent of the total land area.[3] They are broadly classified into tropical, temperate, and boreal types, distinguished by climate, tree species composition, and geographic distribution, with tropical forests holding the highest biodiversity and boreal forests acting as major carbon reservoirs.[4] Forests deliver essential ecosystem services, including carbon sequestration estimated at 296 gigatonnes globally, habitat for most terrestrial species, soil conservation, and regulation of water cycles and local climates.[5][6] Despite these roles, forests face ongoing pressures from deforestation and degradation, driven primarily by agricultural expansion and logging, though FAO data indicate a slowing net global loss rate to 4.7 million hectares annually in the 2010–2020 period.[4]