2.1 Study Area
The City of Wuhan, located in Hubei Province, has been
chosen as the area of study. The city is located on a flat plain,
located between 113°41'E~115°05'E and 29°50'N ~31°22'N,
with the area of 8467.6km2. The study areas include the center
urban of the city and three suburbs (Caidian, Hannan and
Jiangxia)(Fig1). Huangpi and Xinzhou are excluded because of
limitations of data. Detecting the relationship between UHI
development and vegetation fraction is significant to
understand, control, and plan the city's future development.