北京山区森林资源的价值具有附属和动态变化特性。
The value of forest resources in mountainous area of Beijing is affiliated and dynamic.
在清代，大量移民涌入鄂西北山区，他们不仅开垦了大量的荒地，还垦殖了宝贵的森林资源，造成了严重的环境问题。
In the Qing dynasty, a large number of immigrants Hubei Northwest mountain, they not only reclaim a lot of land, resettlement valuable forest resources, causing serious environmental problems.
山区群众的贫困与国有森林资源的丰富构成了强烈的反差，其已成为公益林经营治理的社会制约因素。
The abundance of the poverty of a mountainous area masses and state-owned forest resource made sharp contrast, its already became commonweal forest the society of management restricts an element.
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