DYNAMICS OF OVERLAND FLOW AND SOIL EROSION(I)------OVERLAND FLOW
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摘要: 坡面流是坡面土壤侵蚀的根本动力,是研究土壤侵蚀动力学过程的基础.本文简要介绍了坡面流的基本特征和水力学特性,综述了坡面入渗产流过程、坡面流阻力,以及坡面流运动的数学描述和预报模型等方面的研究进展.指出复杂坡面条件下的坡面流运动,以及从小尺度过渡到大尺度将是今后坡面流研究的重要发展方向.Abstract: Overland flow produces eroding force and plays a basic rolein the study of the dynamics process of soil erosion. This paper brieflyintroduces the basic characteristics and hydraulics properties of overlandflow, and summarizes the research advances in the processes of soilinfiltration, runoff generation, the resistance of overland flow, and theprediction model of overland flow. It is shown that the motion ofoverland flow on hillslopes with complex surface conditions,and themodeling of runoff generation in the various scales will be the futuretrends of overland flow dynamics.
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Key words:
- overland flow /
- hydraulic characteristics /
- flow resistance /
- flow pattern /
- overland flow model
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