森林覆盖率较高，但森林生态系统较为脆弱；
The forest coverage was high, but the forest ecosystem was weak.
森林生态系统是地球上最大的陆地生态系统。
Forest ecosystem is the biggest land ecosystem in the world.
风害是单棵树木或者整个森林生态系统的重要影响因素之一。
Wind damage has a significant impact on single tree and the whole forest ecological system.
森林“病害”是森林生态系统中生物之间食物链关系的一种自然现象。
Forest disease is a kind of natural phenomenon between living things in food chain.
森林是人类赖以生存的主要陆地生态系统之一。
Forest is one of the main terrestrial ecosystems which human being lives on.
森林是陆地生态系统的主体，是国家的重要资源和资产。
Forest is the main body of earth ecosystem and the important national resource and assets.
森林是地球之肺，是陆地生态系统的主体。
Forest just like lung of the earth is main part of terrestrial ecosystem.
森林里有高度敏感、灵敏平衡的各种生态系统。
There are highly sensitive and delicately balanced ecosystems in the forest.
湿地是地球上除了森林、海洋之外最重要的生态系统。
Wetland is the most important natural resource except ocean and forest.
湿地是地球上除了森林、海洋之外最重要的生态系统。
Wetland is the most important natural resource except ocean and forest.
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