Forests are usually valued solely for their main commercial resource, timber, which is why they are so wantonly logged and cleared.
人们总是从商业资源的角度去衡量森林的价值，那就是原木，这也是为什么森林被肆意砍伐和清理的原因。
They won control of logging permits in the late 1970s after protests by ejidatarios against commercial loggers had brought Mexico’s timber industry to its knees.
在合作农场农民对商业伐木工的抗议使墨西哥的木材产业难以为继之后，这些社区在20世纪70年代后期控制着伐木许可证。
Compared with public welfare forests, commercial forests are cultivated to meet the demand of timber market.
商品林是相对于公益林而言的，其主要培育目的在于满足市场对木材等林产品的需求。
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