Abstract: Impacts of the climate change on the yields of winter wheat for the last 40 years in Chongqing area were analyzed.The trend of changes on winter wheat yields for the future 50 years(2001-2050) was quantitatively estimated by using WOFOST crop model and BCC-T63 climate model.The results showed that under the climate change scenario,winter wheat yields would not largely fluctuate.The change range of yields would be between 2.0% and 5.0%,but the yield would be averagely reduced by 3.0%.

Key words: Climate change, Climate change, Winter wheat, Crop model, Yield