防止砒砂岩地区土壤侵蚀的水土保持综合技术探讨

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

砒砂岩地区是黄河流域多沙粗沙来源的主要组成部分 ,又是我国沙暴扬尘的两大策源地之一 ,要想从根本上解决黄河下游粗沙淤积的危害 ,制止沙暴扬尘扩散范围 ,实现该区生态环境良性循环 ,必须对砒砂岩区进行集中治理。作者在砒砂岩地区植物“柔性坝”拦截粗泥沙试验成果的基础上 ,研究了防止沟道土壤侵蚀的系统综合技术 ,并对使用这项技术提出了一个可操作性的治理模式和数理关系式。

Soft rock region is an important source of more and coarse sediment discharging into Yellow River. Here is also one of the two sources of sand storm. So this region must be treated intensively if we want to control coarse sediment siltation in the lower reaches of Yellow River essentially, to prevent spreading range of sand storm and to realize better ecological environment. On the basis of the experimental results of sediment retention by “flexible dam' in soft rock region, the paper discussed the systematic comprehensive technology for gully soil erosion control and provides an operable treatment models and mathematical relations for the using.