Calculation of Corridor Structure Effect on Urban Heat Island using Highly Spatial Resolution Satellite Images in Beijing, China

With the development of municipal modernization, more and more problems were immerged. One of them is urban heat island effect. It serious threatens the residential and ecological environment. So it is very necessary to monitor the This paper focuses on examining the impact of corridor structure on urban heat island using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data. To analyze the impact of the three corridor structures, i.e., road, greenbelt and water body on surrounding temperatures, some of representative regions of road, greenbelt and water were chosen, and several surrounding regions were also chosen as comparative regions within third ring road. Generally speaking, these corridor structures have different effects on the urban heat island listed as follows. The cooling effect of water body to the urban heat island is the most obvious, greenbelt takes the second place, and then it is the road system whose direction is crucial to the alleviation of the urban heat island. Moreover the impacting range of the three corridor structures is limited, and usually not exceeding 300 meters.