...水土保持林 保土量 保土效率 灰色系统理论 [gap=636]Key words weathered granite; grey system theory; soil and water conservation forest; soil-fixing amount; soil-fixation efficien...
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soil and water conservation forest 水土保持林地; 水土保持林; 水上保持林 收藏 soil and water conservation documents 水土保持文献 收藏 .
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The results show that soil and water conservation forest gives its maximal benefit after definite age.
研究结果表明，水土保持林要达到一定的年龄才能发挥其最大的水保效益。
The study on construction technology of soil and water conservation forest system in large project district in semi arid desertification grasslands has been done.
同时对在半干旱荒漠草地大型项目区水土保持林体系的建设技术做了研究。
Disposition of soil and water conservation forest is a crucial problem to accelerate the recovery of vegetation and enhance soil and water conservation efficiency on the Loess Plateau.
合理的水土保持林空间配置是黄土高原植被恢复和水土保持功能持续提高的关键。
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