沿渡河流域分布式水文模型的构建

按照综合分布式概念性水文模型和分布式水文物理模型长处的建模思路，应用改进的格林-安普特下渗理论和地貌水文学的水滴运动理论，建立了一个具有物理基础的松散结构分布式流域水文模型。模型的产流方法融合了邓恩产流理论和霍顿超渗产流理论，考虑土壤水分剖面、土壤各向异性和地形坡度等对流域产流的影响；模型的汇流方法利用地貌水文学理论，寻求水文过程与流域地形地貌的相互作用及定量关系，以确定模型参数，其优势在于可以考虑净雨空间分布不均和流速空间分不均对流域汇流的影响问题。以湿润地区典型流域沿渡河为对象进行水文模拟应用研究，结果良好,说明模型较为可靠。

Developing and Application of a Distributed Hydrological Model for Yanduhe Catchment

A physically based distributed model with compact structure is built up through applying the modified Green-Ampt infiltration theory and topographic hydrology water drop movement theory and integrating the modeling methods of distributed conceptual model and physically based distributed model.The runoff generation method integrates Horton's and Dunne's mechanics,and includes the effects of soil content profile,soil anisotropy and terrain slope on watershed runoff generation.Its runoff concentration model utilizes topographical hydrology theory to identify the parameters of the model through analysis of the relationship between hydrological process and topography of the watershed.Thus it can account for the effect of spatial variability of rainfall and flow velocity on watershed concentration.The simulation results in Yanduhe watershed,which is a typical watershed in wet regions,indicate that the model is feasible and reliable.