Forest development will inevitably cause a sequential change in the forest resource and the surrounding environment.
林区开发使森林资源发生变化，周围的环境也发生改变。
In the historical period, the good forest covering, the sufficient water resource and the clouding and humid environment provided the essential condition for malaria's production in Sichuan area.
历史时期，四川地区良好的森林覆盖、充足的水源补给以及湿热封闭的环境都为瘴气的产生提供了必要的条件；
The Hani practice in maintaining rattan resource and its forest environment is undoubtedly significant to rational use and develop rattan resources in Yunnan tropics even in the world tropics.
哈尼族对藤类资源及其森林环境的管理经验无疑地对云南热区甚至对世界热区合理利用和开发藤类资源具有重要意义。
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