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侵蚀产沙是指游域坡面上的松散颗粒堆积作与所含的气体及水份被侵蚀、搬运至河道形成是移质泥沙的全过程，研究土壤侵蚀的成因，及其影响因蠢，分析土壤侵蚀量和发展规体，是制定流域水保措施，计算水库及河道淤积量的重要依据．
Erosion and sediment production refers to the loose grain accumulation on the slope surface and the contained gas and water are eroded. The transport to the river course is the whole process of sediment transference. The cause of soil erosion is studied, The analysis of soil erosion and development regulation is an important basis for formulating basin-wide water and soil conservation measures and calculating siltation of reservoirs and river courses.