The result offers reference on protection forest system construction in small watershed.
这一结果为小流域尺度防护林建设提够了一定价值的参考依据。
Shaanxi Provincial "Three-North Protection Forest System" development was one of the Six Key Forestry Programs in Shaanxi implemented by the State.
陕西三北防护林体系建设工程是国家在陕实施的六大林业重点工程之一。
Protection Forest on sandy meadow was established by mixing broadleaf trees to raise stability of sandy meadow system.
为提高草沙地系统稳定性，采用阔叶树混交方式营建草沙地防护林。
The drainage and irrigation ditch system should be combined with roads and protection forest.
排灌沟系统、道路、防护林三者应尽可结合布设。
Firstly, according to interference theory, the paper constructs a interference system which sets back to achieve effectiveness of Guangdong coastal protection forest.
首先，依据干扰理论，本文分析构建了广东省沿海防护林效益实现的干扰体系。
Firstly, according to interference theory, the paper constructs a interference system which sets back to achieve effectiveness of Guangdong coastal protection forest.
首先，依据干扰理论，本文分析构建了广东省沿海防护林效益实现的干扰体系。
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