黄土高原土壤侵蚀规律研究方向与途径

从黄土高原水土保持生态建设和黄河治理开发重大实践的需求出发,回顾了我国关于黄土高原土壤侵蚀规律研究的主要进展,分析了存在的问题,论述了深化黄土高原土壤侵蚀规律研究的重大需求,就黄土高原土壤侵蚀规律的研究方法与途径、研究方向与内容提出建议,认为应加强以下几方面的研究:重力侵蚀规律、不同治理措施配置下坡面-沟道系统侵蚀产沙耦合关系及泥沙输移规律、植被措施作用下的水文效应和产流机制、土壤侵蚀产沙发生发展过程尺度转换、黄土高原水土流失模拟理论与技术等;研究途径包括建设黄土高原土壤侵蚀试验观测体系、运用土壤侵蚀模型模拟与反演技术等。

Research direction of the study of soil erosion in the Loess Plateau

Based on the requirements of soil and water ecological construction in the Loess Plateau and the practices of the Yellow River harnessing,research progress on the study of soil erosion in the Loess Plateau in China is reviewed,and some current issues are also listed.Then some suggestion on research direction and content,method and way of soil erosion in the Loess Plateau is addressed.The further research direction of soil erosion in the Loess Plateau is pointed out,including gravitational erosion law,coupling relationship between erosion and sediment of the hillslope-gullyslope system under different soil and water conservation measures,hydrology effects and runoff mechanisms under different vegetation cover,scale conversion in the process of soil erosion,simulation theory and technology about the soil loss in the Loess Plateau,etc.Approaches to the study of soil erosion are put forward,such as construction of observation system for soil erosion tests,application of inversion technology in soil erosion model.