湖北平原水网区水文水资源系统模拟研究

A hydrological system model applied to water transformation and water resource assessment for drainage experiment catchment in plain area in HUBEI province

本文以湖北汉川洪西垸径流试验区为对象，探讨了水网地区水量转化的系统模拟问题．通过单元系统的水均衡分析，提出一种能反映平原湖区水文基本特征的水资源系统模型．它能够定量描述降水、灌溉水、流域产水量、入渗补给量、潜水蒸发量以及地下水动态变化；可进行日径流长序列操怍，由系统输入自动实现地表和地下水动态过程分割和水资源总量评价．该模型用洪西垸径流试验区实测资料做了验证与分析．

This paper investigates the problems of water amount transformation and water resources assessment for a drainage experimental catchment in southern plain area in China. A hydrological system model was developed in terms of water baiance analysis and observations in the Hanchuang experimental catchment, Hubei province. The distinguish features of this hydrological model have two-folds: (1)the hydrological processes and their interaction between the surface water and ground water including precipitation, irrigation water, runoff generation, infiltration and evapotranspiration etc. can be represented in terms of understanding on hydrological cycle feature in southern drainage basin, (2) separation of surface runoff and ground runoff can be determined on the basis of water amount transformation modelling due to influence of human activities, where water resources amount was estimated correctly. Base on the seven-year experimental data,it was found that the proposed model not only yield a good simulation but also can provide water resources assessment for the southern plain area in China.