Application of large scale distribated hydrological model to runoff simulation in Jialingjiang River Basin

Large scale distributed hydrological model has currently been an important tool to assess environmental change.Taking Jialingjiang River catchment as a case,the paper established the grid-based VIC model,used the land surface data derived by University of Maryland,constructed the parameter dataset of VIC model as well through referencing results from LDAS.Simulation results of four hydrometric stations in Jianglingjiang River catchment indicated that the VIC model can effectively simulate the daily or monthly runoff procedure,water balance errors between simulated and recorded runoffs for four hydrometric station are less than 5% while Nash-Sutcliffe coefficients of daily and monthly discharge simulation are both beyond 70% and 90% respectively.The established VIC model can be used to assess impact of climate change on water resources and flood process in Jialingjiang River catchment.