The Urban Heat Island Intensity and Eco-Environmental Effect in Hefei City

Remote Sensing dominates over traditional research methods because of speediness, mpersonality, macroscopical features,strong periodicity so that remote sensing becomes a kind of good tool to study urban heat island.Based on the review of the studies of urban heat island,the bightness temperature is retrieved and the urban construction land is extracted in the study by using of the TM data. The fractal theory and radius method are used to get the spatial distribution of the heat and the intensity in Hefei city.The result indicates that the intensity in Hefei is strong,the area of heat island becomes larger and larger with the development of the city,and it is necessary to built the scientifical and rational ecological infrastructures.