森林

forest (also called a wood, woodland, wold, weald, holt, frith or firth) is an area with a high density of trees. There are many definitions of a forest, based on the various criteria. These plant communities cover approximately 9.4% of the Earth's surface (or 30% of total land area), though they once covered much more (about 50% of total land area), in many different regions and function as habitats for organisms, hydrologic flow modulators, and soil conservers, constituting one of the most important aspects of the Earth's biosphere. Although a forest is classified primarily by trees a forest ecosystem is defined intrinsically with additional species such as fungi.

森林，是一个高密度树木的区域。这些植物群落覆盖着全球大面积并且对二氧化碳下降、动物群落、水文湍流调节和巩固土壤起着重要作用，是构成地球生物圈当中的一个最重要方面。森林包括乔木林和竹林。森林是由树木为主体所组成的地表生物群落。它具有丰富的物种，复杂的结构，多种多样的功能。

森林 指土地面积大于等于0.0667hm2（1亩），郁闭度大于等于0.2，就地生长高度达到2m以上（含2m）的以树木为主体的生物群落，包括天然与人工幼 林，符合这一标准的竹林，以及特别规定的灌木林，行数在2行以上（含2行）且行距小于等于4m或冠幅投影宽度在10m以上的林带。