SWAT模型在海拉尔河流域径流模拟中的应用研究

Runoff Simulation of Hailar River Basin Based on SWAT Model

以海拉尔河上游流域作为研究区域,基于Arc GIS构建SWAT分布式水文模型对流域水文过程进行模拟,通过对流域的基础数据整合,模型采用1999-2003年实测径流数据进行参数率定,将2004-2010年实测径流数据作为模型的验证期,对模型在海拉尔河上游的适用性进行研究。通过对月和年径流模拟值和实测值的比较,率定期和验证期的Nash系数Ens和相关系数R2分别在0.861-0.873和0.877-0.899之间。基于这两个评价标准可知：SWAT模型在海拉尔河上游流域有良好的适用性,可以为该流域的水资源管理提供依据。

This study was based on Arc GIS to build distributed hydrological model SWAT to simulation of the watershed hydrological processes of the Hailar River upstream basin. In order to study the applicability of the model in the Hailar River upstream, through integration the based data of the basin, the model using the measured runoff data from 1999 to 2003 to parameter calibration, and the measured runoff data from 2004 to 2010 to validate the model. The comparison beween the simulated and measured monthly and annual runoff show that the Nash coefficient of Ens and cor-relation coefficient R2 calibration and validation periods are respectively 0.861-0.873 and 0.877-0.861. Based on the two evaluation criteria, the SWAT model has a good applicability in the Hailar River upstream basin, and also could provide the basis to the basin water resources manage-ment.