Abstract: Based on the available observation data from 70 meteorological stations in Beijing,Tianjin and Hebei regions,recorded from the very beginning of the observation to 2000,the changes of the characteristics of average temperature and the spatio-temporal distribution of the precipitation and the annual,inter-annual and decade were analyzed,taken temperature and precipitation as main meteorological factors.The results showed that the mean temperature had increased by 0.8-1.2℃ averagely and increased by 0.4℃ per decade.The yearly precipitation had decreased by 87 mm averagely and by 21 mm per decade due to the global warming up in 90′s these regions.The each growing period of winter wheat had moved up.The winter wheat growing boundary extended to over 41°N from the 1990′s,which was about 30-50 km northward compared with it in the 1950′s.

Key words: Climate change, Climate change, Growing boundary, Impact on agriculture