防洪和治本的关键问题在于泥沙,其中包括水源地带土壤的冲刷,水库的淤积河势的冲淤变化,挟沙水流的基本性质,以及其他有关泥沙问题,内容是十分复杂广泛的。为配合流域规划的需要,黄委会在初步分析了泥沙的数量与来源之后,曾会同农林地质 The key issues of flood control and root-cause management are the sediment, which includes the erosion of soil in the water source zone, the erosion and sedimentation change of silted river regime in the reservoir, the basic nature of sediment-laden flow, and other sediment-related problems. The content is very complicated and extensive. In order to meet the needs of river basin planning, the Yellow River Commission conducted a preliminary analysis of the quantity and source of sediment,