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本文探讨了土壤侵蚀过程的人类活动,分别提出了水土流失过程的产流、产沙函数,由此建立了人类活动对水土流失影响的数学模型,并运用该模型分析了甘肃境内的祖厉河流域、渭河流域及泾河流域1955—1969年及1970—1985年两个时段期间,人类活动对减水、减沙效益的贡献。
In this paper, the human activities of soil erosion process are discussed, and the runoff and sediment production functions of soil erosion process are proposed respectively. Based on this, a mathematical model of the impact of human activities on water and soil loss is established. By using this model, The contributions of human activities to the water-reducing and sediment-reducing benefits during the period of 1955-1969 and 1970-1985 in the basin, Weihe River basin and Jinghe River basin.