Application of a hydrological digital elevation model on the Zhujiang River basin for freshwater discharge into the South China Sea
水文数字高程模型在珠江流域入海径流模拟中的应用

To calculate the line source of runoff in the Zhujiang River drainage area, a hydrological digital elevation model (H-DEM) was introduced. With modified parameters of observed rainfall and basin runoff, the improved H-DEM could well reproduce the seasonal and annual variations in comparison to the observed data. The improved H-DEM can be used in the subtropics. The simulations on freshwater discharged into the South China Sea in the Zhujiang River basin by the improved model show significant interannual and interdecadal variations both in the point and line sources.