Abstract: To understand the impacts of stomata resistance variation of vegetation on main climate factors in Poyang Lake basin,three experiments including control experiment(CS),sensitive experiment 1(RS1) and sensitive experiment 2(RS2) was conducted by using Weather Research Forecast(WRF) model,based on NCAR dataset from June 16 to July 31 in 2000.The results,analyzed with observation data from 80 meteorological stations in Jiangxi province,showed that CS could simulate well in temporal change and spatial distribution of temperature,precipitation and relative humidity in this region.The correlation coefficients between them were all significant at 0.01 levels,with 0.71,0.79 and 0.58 respectively.Precipitation and relative humidity increased(decreased) with the stomata resistance's decrease(increase),but temperature decreased(increased) according to RS1(RS2).In the whole Poyang Lake basin,temperature and relative humidity changed along the same tendency with stomata resistance changed,but precipitation changed complicated and needed to study more in future.The research conclusion could provide references to parameter research on the flux exchange between vegetation and atmosphere.

Key words: Climate change, Climate change, WRF, Stomata resistance, Sensitivity experiments, Poyang Lake basin