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根据地表径流力学原理,研究了降雨引起的山地侵蚀的输沙量.对于某一土壤类型,地表径流的输沙量可用坡度和流量的幂函数来表示.单场暴雨引起的土壤流失量依赖于降雨历时和降雨强度,输入河流和淤积于水库中的泥沙,大部分来源于山地.降雨和地表径流所引起的泥沙颗粒分散和搬运,是一个复杂的物理过程.山地土壤侵蚀速率主要取决于土壤颗粒的分离和溅蚀及地表径流的搬运能力.
According to the principles of surface runoff mechanics, the sediment load of mountainous erosion caused by rainfall is studied. For a certain soil type, the sediment discharge of surface runoff can be represented by the power function of slope and flow rate.The amount of soil loss caused by single rainstorm depends on Rainfall duration and rainfall intensity, input of rivers and silt deposited in reservoirs mostly come from mountainous areas.Dispersion and transportation of sediment particles caused by rainfall and surface runoff are complex physical processes, and the rate of mountain soil erosion mainly depends on Soil particles in the separation and erosion and surface runoff handling capacity.