黄河砒砂岩区生态治理关键技术研究

Research on the Key Technologies of Ecological Control for Pisha Sandstone Region of the Yellow River Basin

砒砂岩区是黄河流域生态最脆弱、复合侵蚀最严重的粗泥沙集中来源的核心区,为实现黄河流域生态保护和高质量发展国家战略确立的生态保护重大目标,迫切需要创新砒砂岩区生态治理关键技术。针对砒砂岩区生态退化和复合侵蚀的治理问题,通过典型抽样调查、遥感解译统计、室内水化与力学试验、野外原位观测与示范验证等多种方法,重点研发了砒砂岩区生态治理若干关键技术。介绍了砒砂岩区块体状重力侵蚀治理、砒砂岩改性材料谷坊建造、砒砂岩煤矸石改性利用、砒砂岩质地土壤改良提质、生态综合治理模式等的关键技术原理与内容,以及这些技术的示范应用效果;展望了砒砂岩区生态治理理论与技术研究的发展方向,为砒砂岩区生态治理提供科技支撑,并推进脆弱生态区治理技术的深化研究。

Pisha sandstone region is the core area of the Yellow River coarse sediment source with the most fragile ecology and the most serious complex erosion in the Yellow River Basin.In order to achieve the major goals of ecological conservation established by the national strategy of ecological conservation and high-quality development of the Yellow River Basin,it is urgent to innovate the key technologies of ecological conservation in Pisha sandstone area.For scientific and technological problems in the practice of ecological degradation and compound erosion control in Pisha sandstone area,the key technologies of ecological conservation in Pisha sandstone area were systematically developed by cross-fertilization of multidisciplinary and multi-methods.By condensing the main technical results developed in this project,this paper introduces the principles and contents of key technologies,such as block-like mass erosion conservation in Pisha sandstone area,construction of Pisha sandstone modified material check dam,modification and utilization methods of Pisha sandstone coal gangue,methods of soil improvement and quality improvement in Pisha sandstone,and ecological comprehensive management mode in Pisha sandstone area;the development direction of the ecological conservation theory and technology research in Pisha sandstone area are prospected,those are expected to provide reference for the promotion and application of ecological conservation technology in Pisha sandstone area and push forward the deepening research on ecological conservation technology in the future.