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。
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.
分析岩土体类型及其工程地质特征，是治理环境工程地质问题、防治人为灾害的基础。
To analyse the rock soil mass types and its engineering geological characteristics are the basis of harnessing environmental engineering geologies and preventing and controlling man made calamities.
选用专化抗性品种人为地单一扩大其种植面积以防治小麦条锈病，将迅速导致品种的专化抗性失效。
A special resistance cultivar grown and spread solely in a certain area to control wheat stripe rust will cause the original resistance invalidation rapidly.
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