Table 1 represents the mean brightness of temperature of
Caidian, Hanna, Jiangxia, the center urban and the whole
region and the URI of the whole region for 14 years. It was
found that the mean brightness of temperature of the whole
region was increased from 13.37℃to 22.98℃. As the
development of urbanization, the quality of hot environment of
the center urban also degraded seriously. The mean brightness
temperature was increased in the study districts, especially in
the center urban. Comparison between the mean temperature of
Oct 26, 1988 and Oct 13, 2002 in the center urban shows that
the values increased 9.12 ℃.