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该文分析了黄土丘陵区陡坡侵蚀产沙的特点,通过室内人工模拟降雨侵蚀试验和野外径流小区观测资料,对陡坡侵蚀产沙过程及降雨侵蚀产沙量进行了研究。并对溅蚀产沙量与影响因素作了回归分析,表明:室内试验溅蚀产沙量占总产沙量的22%～54%。同时根据试验研究与建模,提出了陡坡降雨径流侵蚀产沙的含沙量过程计算模型。经检验,结构合理,具有较好的实用价值。
In this paper, the characteristics of erosion and sediment production on steep slopes in the Loess Hilly region were analyzed. The process of erosion and sediment production on the steep slopes and the rainfall erosion and sediment yield were studied by indoor simulated rainfall erosion test and field runoff observation data. The regression analysis was conducted on the amount of sediment and its influencing factors. The results showed that the amount of sand produced by laboratory tests accounted for 22% ~ 54% of the total sediment yield. At the same time, according to the experimental research and modeling, a calculation model of sediment concentration in steep slope runoff erosion and sediment yielding is put forward. After testing, reasonable structure, with good practical value.