... 不适度 disamenities 防灾林；防护林 disaster prevention forest 圆盘方程式 disc equation ...
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Forest disasters mainly contain human cutting disasters, fire disasters, pest and rodent disaster, the lack of water disasters. This article focuses on forestry "three evils" and prevention.
森林灾害主要有：人为砍伐树木的灾害、火险灾害、病虫鼠害的灾害、缺乏水资源的灾害等等。本文主要阐述了林业“三害”及其防治。
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