黄河中游砒砂岩区抗蚀促生技术研究

Resistance to Erosion and Growth Promoting Technique of Pisha Sandstone Region in the Middle Yellow River

砒砂岩区是黄土高原生态环境极度脆弱、土壤侵蚀最为剧烈的区域,同时又是黄河粗泥沙集中来源区,研究砒砂岩区抗蚀促生技术具有重要意义。在对以往有关砒砂岩区水土流失治理技术研究成果综述的基础上,重点介绍了近年来的抗蚀促生技术,包括研发的适合于黄河中游砒砂岩地区的抗蚀促生材料、砒砂岩改性筑坝材料,以及砒砂岩地区抗蚀促生措施二元立体配置模式。据野外试验观测,抗蚀促生试验小区径流量减少70%以上、产沙量减少91%以上,表明研发的抗蚀促生材料和创建的二元立体配置模式达到了防治砒砂岩区水土流失和快速修复生态的目的。

Pisha sandstone region is the region where the ecological environment of the loess plateau is extremely fragile,the soil erosion is the most severe and in the meantime,is also the main original area of coarse sand of the Yellow River. Therefore,it has important significance to study the technique of resistance to erosion and growth promotion in the Pisha sandstone region. The paper mainly introduced the technique of resistance to erosion and growth promotion in recent years,including the developed resistance to erosion and growth promotion material which suits to the Pisha sandstone region in the middle Yellow River,the modified Pisha sandstone material for warping dam building and two dimensional allocation mode of resistance to erosion and growth promotion measures of Pisha sandstone region based on the past summary of achievements on soil and water loss control study of related Pisha sandstone regions. The field observation shows that the runoff of pilot area has reduced more than 70% and sediment yield reduced more than 91%. This can provide technical support for the control of Pisha sandstone region where soil and water loss is severe and for the Yellow River control and development.