Construction and verification of distributed rainfall-runoff model for forested watershed in alpine and gorge region
高山峡谷地区森林流域分布式降雨-径流模型的构建与验证

Considering of the main hydrological characteristics in the upper Zagunao River watershed of the upper reach of Minjiang River,general hydrological models were selected to construct the distributed rainfall-runoff process model for the forested watershed in typical alpine and gorge terrains.Calibration of too many regional parameters was avoided to assure the transportability of the models in similar watersheds.Two flow series of 1 000 hours in 1999 and 2000 were simulated by using the distributed model.The runoff hydrograph,accumulative runoff volume,peak discharge,and peak time showed good fittings with observed series.The simple structure and less empirical parameters gave the distributed model the ability to simulate the rainfall-runoff processes in similar watershed across scales,which provided the basic approach to the hydrological scaling research.