水土保持通报2012，Vol.32Issue(3)：178-181,4.
三峡库区张家冲小流域降雨-径流模拟
Rainfall-Runoff Simulation for Zhangjiachong Small Watershed in the Three Gorges Reservoir
余楚 1孙自永 2周爱国2
作者信息
- 1. 中国地质科学院水文地质环境地质研究所,河北石家庄050061
- 2. 中国地质大学环境学院,湖北武汉430074
- 折叠
摘要
Abstract
By taking the Zhangjiachong small watershed in the Three Gorges Reservoir for an example,rainfall—runoff process simulation is conducted to provide references to the researches on soil and water loss and non-point source pollution process and scientific supports to control soil and water loss and non-point source pollution,to ensure water security,and to alleviate the growing pressures on ecological environment.Based on the observed data of hydrology and temperature and digital elevation model,TOPMODEL,a half-distributed hydrological model,is used to simulate daily runoff in the study area.Nash—Sutcliffe coefficient,Root Mean Squared Error（RMSE） and correlation coefficient are taken as objective functions.Simulation results show that the measured values of runoff dynamics are roughly consistent with the simulated values.Simulation accuracy and fitting efficiency in wet season are better than those in dry season and they vary greatly.According to the ＂hydrological forecasting standards＂ SL250—2000,runoff simulation accuracy grade is in C class in wet season and below C class in dry season.TOPMODEL is appropriate for the daily runoff simulation in wet season,but not appropriate in dry season.关键词
降雨—径流模拟/水文模型/小流域/TOP/MODEL模型Key words
rainfall-runoff modeling/hydrological model/small watershed/TOPMODEL分类
农业科技引用本文复制引用
余楚,孙自永,周爱国..三峡库区张家冲小流域降雨-径流模拟[J].水土保持通报,2012,32(3):178-181,4.
