maps,from which we can see that the UHI had an increase
trend in the process of fluctuations for the past 14 years,
especially in the center urban. From 1996, the land surface
temperature of the urban, n which there is industrial areas, new
urban and densely populated residential areas, as much higher
than that of the suburb, and the area of high land surface
temperature can be seemed as island and be easily recognized.
Meanwhile, there was not a clear center of UHI in the center of
the urban. There structure of UHI was complex inlaying and
showed a pattern of distribution centers.