Researched on urban expansion and climate responses of Chongqing in the past 30 years

The paper had analyzed LUCC of Chongqing urban in the past 30 years using the RS and GIS technology. The changes of the temperature, precipitation, sunshine, humidity, wind speed and air pressure of Chongqing urban district in the past 30 years were obtained through analyzing the data of the weather station in Chongqing urban. The process of climatic change that responded to the LUCC was concluded. The result indicated: in the past 30 years, the area of cultivated land had decreased rapidly; on the contrary, the construction land had experienced a fast-urbanized process. During the period from 1978 to 2007, the annual average temperature, the hottest month temperature and the coldest month temperature in Chongqing urban district had experienced the process of rising unceasingly. At the same time, the annual precipitation had experienced a process of reducing unceasingly. The climate of Chongqing urban district had an obvious response to area expand and population increase of the city, they could cause and intensify the effect of “Hot Island”, “Dry Island” and “ Fog Island” from a long-term.