分布式流域产流数学模型的研究

基于流域下垫面各个因子空间分布不均匀的特点 ,开发出一个参数分布式流域产流模型 ,将流域划分为一系列网格单元 ,采用连续方程计算每一网格单元的反映。模型可与地理信息系统连结 ,以获取网格单元的地理信息 ,可视化地显示和分析各单元格的基本情况以及对降雨径流的关系。采用此模型对陕西镇巴县的黑草河小流域进行了模拟 ,模拟结果与实际的洪水过程符合良好。

Study on Distributed Mathematical Model for Simulating Watershed Hydrology

The land cover and landform in a watershed is in fact a mosaic, in order to quantify the hydrological responses of complex regions to storm events, a distributed model has been developed for the purpose. The model utilizes a distributed approach by dividing the entire simulation domain into regular cells. It has the capacity to simulate the hydrograph of each cell, namely the space-time distributions in a watershed. And Geographic Information Systems (GIS) technologies can be used effectively to visualize, analyze and model the large-scale spatial data. The model has been utilized in the Heicaohe watershed in Zhenba county, Shaanxi province and the simulated result agrees well with the measured data.