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森林是地球上结构最复杂、功能最多和最稳定的陆地生态系统。森林是宝贵的自然资源,是人类生存发展的重要支柱和自然基础,并被人们誉为地球的“肺”。森林覆盖率常是衡量一个国家或地区经济发展水平和环境质量好坏的重要指标。这不仅因为森林具有重要的经济价值,又是可更新资源,而且在维持生态平衡和生物圈的正常功能上也起着重要作用。
Forests are the most complex, functional and stable terrestrial ecosystems on Earth. The forest is a precious natural resource, an important pillar and natural foundation for the survival and development of mankind, and is praised as the “lung” of the earth. Forest coverage is often an important indicator of the level of economic development and the quality of the environment in a country or region. This is not only because forests have important economic value, but also are renewable resources, and they play an important role in maintaining the ecological balance and the normal functioning of the biosphere.