各种治理措施效益由高到低的顺序依次是坡改梯、经济林果、水保林、封禁治理、人工种草和保土耕作。
The order of controlling benefits from high to low is terrace, economical forest-fruit, soil and water conservative forest, closed treatment, artificial grass planting and conservative tillage.
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 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 results show that soil and water conservation forest gives its maximal benefit after definite age.
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