摘要以西峰杨家沟小流域为研究对象，研究了在降雨和人类活动的影响下，黄土高原沟壑区小流域治理前后水沙变化。
The variation of water and sand is studied under the influence of the rainfall and human activity in the fore and aft er management of small watershed in gully region of the loess plateau.
摘要以西峰杨家沟小流域为研究对象，研究了在降雨和人类活动的影响下，黄土高原沟壑区小流域治理前后水沙变化。
The variation of water and sand is studied under the influence of the rainfall and human activity in the fore and after management of small watershed in gully region of the loess plateau.
以西峰杨家沟小流域为研究对象，研究了在降雨和人类活动的影响下，黄土高原沟壑区小流域治理前后水沙变化。
The variation of water and sand is studied under the influence of the rainfall and human activity, in the fore and after management of small watershed in gully region of the loess plateau.
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