对油松天然林的林分结构进行了研究。
Natural forest stand structure of Pinus tabulaeformis was studied.
全面组织实施天然林保护工程。
Comprehensively Organizing and Implementing the Natural Forest Protection Project.
次生林就是经过砍伐后又长起来的天然林。
A secondary forest is a natural forest formed after the original forest was felled.
我们要保护这一带的天然林，严禁乱砍滥伐！
We must protect the natural woods here, and strictly forbid the cutting down of trees.
特别是天然林适用性较差，对其进行新的分类。
So the authors make new classification and name as the classification of forest management type.
天然林资源保护工程开始启动，林业投入进一步加大。
The natural forest protection project had initiated, and input into forestry was further enlarged.
天然林的演替格局一般趋势是从集聚分布趋于均匀分布。
The general trend of the natural forest pattern is from amass type to uniform type.
天然林斑块的面积比例都在85%以上，人工林斑块面积比例都在15%左右。
The area percentage of natural forest is above 85%, and the percentage of plantation is about 15%.
天然林斑块的面积比例都在85%以上，人工林斑块面积比例都在15%左右。
The area percentage of natural forest is above 85%, and the percentage of plantation is about 15%.
应用推荐