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Improvement and Application of GIS-based distributed SWAT Hydrological Modeling on High Altitude,Cold,Semi-arid Catchment of Heihe River Basin,China
Author(s): 
Pages: 22-26
Year: Issue:  2
Journal: JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCES EDITION)

Keyword:  SWAT模拟地理信息系统黑河流域;
Abstract: 在集成地理信息系统(GIS)和遥感(RS)技术的SWAT(Soil and Water Assessment Tool)分布式水文模型改进的基础上,对黑河干流山区流域出山径流进行了模拟. SWAT-GIS按不同的地形、土壤类型、土地利用或覆盖类型将整个流域划分成157个具有相似水文特征的水文响应单元(HRU).通过模拟结果比较,表明浅层蓄水层回归因子(基流回归因子)、海拔高度带的划分分别对黑河干流山区流域地下径流和融雪径流过程有重要的影响,是该模型模拟精度高低的关键.通过参数的调整,1990~2000年月平均径流模拟结果显示,莺落峡站出山径流模型效率系数R2达到0.88,相关系数r2接近0.91.
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