Based on the thunderstorm data of 11 meteorological stations in Shanghai, the temporal and spatial climatic characteristics of thunderstorm in recent 50 yearswere analyzed. The results indicated that the annual total thunderstorm days p resented decreasing trend from 1960 to 2008, and especially obvious in autumn. In recent 30 years, thunderstorm days in Augustwere more than that of Sep tenber. In the whole year, the decrease of thunderstorm dayswasmore in the northwestern, southwestern and southeastern part of Shanghai, and in sp ring, summer and autumn, the decrease of thunderstorm dayswasmore in the western and southern part, the northwestern part, and the southern part of Shanghai, respectively. In the first 8 years of 21 st century, the first day of thunderstorm was earlier．but the last day changed insignificantly at Xujiahui station.

Based on the meteorological data ( temperature, p recip itation, sunshine, etc) and the community economy data of the land,population and energy, the interannual variation trend and evolution of land - use, population, energy consuming, climate and air pol2lution were analyzed. Result show that changes of climate and the land - use in the Yangtze Delta area were reflecting the influence ofboth human activities and nature. Although the urbanization and industrialization had accelerated economy develop ing of this area,meanwhile they also had caused some p roblems of sharp ly increase of population and energy consump tion, and these would aggravatethe atmospheric pollution and climatic environment change.