基于SWAT模型的山区日径流模拟在玛纳斯河流域的应用

Application of Simulation about Montanic Daily Runoff Volume in the Manas River Basin Based on SWAT Model

针对玛纳斯河流域山区水资源对径流的显著影响,建立适合于该流域的SWAT分布式流域水文模型。结果表明,采用1980-1995年数据模拟,验证了玛纳斯河流域控制性站(肯斯瓦特水文站)的日径流的模拟过程基本上反映了实际情况。模拟相对误差RE为17%、Nash Sutcliffe效率系数Ens为0.73,为新疆山区河流建立分布式流域水文模型提供了参考。

Glacier-snow melt water is advantageous for all the arid areas in Xinjiang,and it plays an important role in runoff formation.Manas River Basin is a typical mountainous drainage basin in Xinjiang,China.In this paper,a distributed hydrological model suitable for the Manas River Basin is developed based on the SWAT model and the consideration of the significant effect of montanic water resources on runoff volume in the drainage basin.The hydrological data measured during the period of 1980-1995 are used to simulate and validate the daily runoff volume at Kenswat Hydrological Station,a control hydrological station in the Manas River Basin.The simulated results are accordant with the measured data,with a relative error of the simulation（RE） 17%,and the Nash efficiency coefficient（Ens） 0.73.The simulated results are reliable and provide the references for developing the distributed models for the montanic rivers in Xinjiang.