forest An area with a high density of trees. A small forest may be called a wood. ENVO ENVO:00000111 EcoLexicon:forest FTT:258 FTT:506 FTT:715 FTT:717 Geonames:V.FRST LTER:2 SWEETRealm:Forest TGN:21641 TGN:21642 TGN:21645 Wikipedia:Forest copse forest forest reserve grove national forest wood woodland The definitions of forest can vary greatly, and different classes will be needed to support the major categories. Tree cover alone is not enough to distinguish between forests and plantations. The international definition proposed by the 2010 FAO Forestry Resource Assessment: "land spanning more than 0.5 ha with trees higher than 5 metres and canopy cover of more than 10 percent, or trees able to reach these thresholds in situ . It does not include land that is predominantly under agricultural or urban land use." - FAO. 2010. Global forest resources assessment 2010, Main report, FAO Forestry Paper 163. Rome. vegetated area