【摘要】 以Horton地貌律、Rodriguez-Iturbe和Valdes地貌瞬时单位线(G理论)为理论依据,以水利实验、观测数据为基础,分析下垫面各因子的基本特征,确定了高程、坡度、基岩地质、河网密度、植被覆盖度5个因素为下垫面类型划分的主要指标,并采用统计分析方法确定了下垫面类型划分的类型界限值。更多还原

【Abstract】 Based on Rodriguez-Iturbe and Valdes geomorphic immediate unit hydrograph (G theory) associated with Hor-ton geomorphology, the characteristics of the major factors influencing underlying surfaces are analyzed with data from experiments and observations. The elevation, declivity, basic-rock geology, drainage density, and the degree of vegetation coverage are the major factors used to classify the underlying surfaces. The demarcation value is also given in the present study for classifying underlying surfaces.更多还原