汾河上游流域分布式水文模型的构建  

Distributed Hydrological Model of Watersheds in the Upper Reaches of the Fenhe River

作　　者：孙西欢[1] 张柏治 王志璋[1] 

机构地区：[1]太原理工大学水利科学与工程学院,山西太原030024 [2]陕西省杨凌区政府水务局,陕西杨凌712100

出　　处：《水土保持通报》2008年第3期89-92,共4页Bulletin of Soil and Water Conservation

基　　金：山西省科技攻关项目(051115);山西省青年科技研究基金资助项目(20031053)

摘　　要：根据汾河上游流域的水文特性,采用以坡度、坡向为主要因素,按照集水区自然分水线划分子流域的流域离散方法,将SCS产、汇流模型与马斯京根法结合用于计算该地区的径流过程,建立了适于该地区,基于流域尺度的次降雨—径流分布式水文模型。选用该地区的典型流域——岚河流域与分布式模型耦合,进行模拟。经实测资料与模拟结果的分析比较,结果表明,该模型具有一定的精度,径流量合格率及汇流合格率分别达到70%和80%,且计算流量过程与实测流量过程吻合较好,所建模型基本适用于该地区的降雨—径流计算。Through the analysis of hydrological characteristics of watersheds in the upper reaches of Fenhe River, a distributed hydrological model at a catchment scale was constructed. The runoff yielding and sink flow model of SCS and the Muskingum method were firstly combined to determine discharge process in the area. Moreover, taking slope angle and slope orientation as the main indexes, a watershed was divided into sub-catchments by natural draining divide. To test accuracy of this model, the catchment of the Lanhe River in the area was chosen as a typical catchment. Results show that calculated runoff yielding and sink flow account for 70% and 80% of the observed dada, respectively, and simulated discharge process is basically coincident with observed discharge process. The model is suitable to modeling runoff yielding and sink flow in the area.

关 键 词：分布式水文模型 汾河流域 产流 汇流 

分 类 号：S157[农业科学—土壤学]