以降雨强度和植被覆盖度为两个主要变量,采用人工模拟降雨的试验方式,应用线性和非线性相结合的计算方法,分析研究了降雨强度和植被覆盖度这2个直接因素以及径流量和含沙量2个间接因素在坡地水力侵蚀产沙过程中的复合影响及影响权重,结论如下:在单一要素的拟合分析中,雨强和径流量的相关性最大,植被覆盖度与含沙量的关系最明显。由此推得,雨强对径流量的影响显著,植被覆盖度对产沙量的影响大于雨强;复合相关性拟合显示,产沙量与径流量和含沙量的关系显著,含沙量对产沙量的影响大于径流量的影响,雨强对产沙量的影响大于植被覆盖度;4个分析因素中,对坡地侵蚀产沙影响权重最大的是径流量,2个直接因素中以雨强的影响权重最大。由此提出,在坡地侵蚀产沙的控制实践中,应在坡面水利工程控制坡面径流的基础上,发挥植被覆盖度的作用。 Taking rainfall intensity and vegetation coverage as the two main variables, artificial rainfall experiments were conducted. The linear and nonlinear calculation methods were used to analyze the two direct factors, rainfall intensity and vegetation coverage, The results show that there are two indirect factors of sediment concentration in the process of hydraulic erosion and sediment production in slopeland. The conclusions are as follows: In the single element fitting analysis, the correlation between rainfall intensity and runoff is the largest, The relationship between the amount of the most obvious. Therefore, the influence of rainfall intensity on runoff is significant, and the influence of vegetation coverage on the sediment yield is greater than that of rainfall intensity. The composite correlation fitting shows that there is a significant relationship between sediment yield and runoff and sediment concentration, The impact of rainfall on sediment yield was greater than that of vegetation coverage. Among the four factors, the most important impact on erosion and sediment yield was runoff. Of the two direct factors The impact of heavy rain the most weight. Therefore, it is suggested that in the practice of controlling erosion and sediment production in slopeland, the effect of vegetation coverage should be exerted on the basis of slope runoff controlled by slope water conservancy project.