Abstract: Based on the data in 1996-2006 in Zhangjiakou region,the change trends of the temperature,precipitation,runoff depth and burying depth of the ground water were statistically analyzed.The results indicated that the annual mean temperature in Zhangjiakou showed an increased trend by the rate of 0.4℃ per ten years since 1960.The temperature increased mainly in winter by the rate of 0.68℃ per ten years.The linear variation tendency of the precipitation was not obvious,but the departure of the yearly precipitation and the precipitation in summer showed an obvious periodic characteristic.The periods during 1966-1979 and 1990-1996 were with relative more precipitation,and during 1980-1989 and 1997-2006 with less precipitation.The periodic change of the precipitation led to a same change trend with the streamflow abundant or dry up in Qingshui River,but only with time lag slightly.The climate change and overexploitation of the ground water caused the continuous drawdown of the ground water.Therefore,responding to the climate change required the reasonable adjustment of agriculture structure,scientific utilization of water resources and protection of the ecological environment.

Key words: Climate change, Climate change, Water resources, Impact