Probe to Integrated Soil Conservation Techniques for Soil Erosion Prevention in Soft Rock Area

摘要

Soft Rock Region is an important parts of coarse sediment sources in Yellow River Basin. It is also one of the two sand storm sources of China. If you want to essentially prevent coarse sediment from silting in the lower reaches of Yellow River, control the spreading over range of sand storm and realize the better cycle of local ecological environment, you must treat the soft rock area integratedly and concentratedly. The paper studied the systematic techniques for controlling gully erosion on the basis of the experiment results of sediment retention by "flexible dam" in the area. The paper also presents a operational treatment model and mathematical formulas and makes an example planning of 510 small watersheds in Huangfu River.