Studying the impact of land-use and hydrological change on regional climate can provide theoretical guidance for socioeconomic development.The impact of land-use change associated with the development of a hydropower station on the Daduhe River,located in Sichuan Province,on the regional climate of the region,was examined through comparison of two simulations-a control experiment and a land-use change(sensitivity) experiment-using the WRF(Weather Research and Forecasting) model.Two study areas-Daduhe River and Pubugou Hydropower Station-were selected.According to precipitation characteristics,representative years(dry/wet/normal) were chosen,and the normal year of 2011 was selected as the simulation year.In addition,the months of January,April,July and October were taken as spring,summer,autumn and winter,respectively.First,the temporal variability and accumulated frequency of precipitation were studied by applying statistical analysis methods to daily precipitation data for the period 1970-2012 at 12 observation stations along the Daduhe River.Then,the control experiment and sensitivity experiment were separately conducted for the Daduhe River and Pubugou Hydropower Station study areas.The results indicated that the climatic effects of the land-use change associated with the hydropower station in the above two areas were weak on the local scale.The annual mean surface temperature decreased,ranging from 0.2℃ to 0.4℃.In addition,the temperature increased weakly in winter and decreased in the other seasons.No significant influence on precipitation in winter,spring and autumn was found,but a weak decrease in summer was detected.The relative humidity increased weakly surrounding the water body,and the wind speed showed almost no change.These meteorological variables only changed in the vicinity of the water body.The farther from the reservoir,the weaker the influence.