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参照降雨、径流响应函数模型，建立流域降雨、输沙响应函数模型，用模型的输入（降雨）及输出（输沙）过程的实测资料和最小二乘法推求模型的响应函数ｈｓ。ｈｓ确定后，只要已知流域的降雨过程，便可通过矩阵计算，推求出流域出口断面的输沙率过程。本模型在李子溪流域及嘉陵江区其它小流域作了实际应用与检验。得到了满意的结果。
Based on the model of rainfall and runoff response, a model of rainfall and sediment transport response was established, and the response function hs of the model was derived by using the measured data and the least square method of input (rainfall) and output (sediment transport) of the model. Once hs is established, as long as the rainfall course of the catchment is known, matrix calculation can be used to deduce the sediment transport rate of the exit section of the catchment. The model is applied and tested in the Lizi River Basin and other small watersheds in Jialingjiang District. Have been satisfied with the results.