Under protecting ecological balance, the authors of this paper present that forest resources are divided into three parts: environment forest, industrial forest and mountain conprehensive forest.

本文阐述了生态平衡下，森林采伐如何进行。森林资源划分为三大类：第一类是环境资源林；第二类是工业人工林；

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An increasing amount of forest land has been used for industrial purposes, or for agricultural development such as crop growing.

越来越多的林地被用于工业目的，或用于农业发展，如种植作物。

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Dioxins are mainly by products of industrial processes but can also result from natural processes, such as volcanic eruptions and forest fires.

二恶英主要是工业过程的副产品，但也可能来自于自然过程，如火山爆发和森林火灾。

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Among the other chemicals measured were vanillic acid and sulphur, two indicators of forest fire and industrial emissions, respectively.

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From there, the weaving route brought big towns and stretches of grey highways, abandoned trains and industrial zones, then a forest-and-river trail over dams and bridges.

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Before the economy collapsed, Forest City was eager to develop 22 acres of industrial land in Brooklyn, N.

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