·2,447,543篇论文数据，部分数据来源于NoteExpress
流域产流产沙取决于流域的地形地貌、土壤、植被、气象、气候以及人类活动等多种因素。
The yield lies on many factors of a watershed, such as topography, physiognomy, soil, vegetation, weather, climate, human activities and so on.
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