Study on Evolvement of Urban Thermal Environment Spatial Patterns Based on RS and GIS -- a Case Study of Changchun City, Jili Province, China

Abstract

For urban planning and management, it is essential that detailed information about the environment of urban space, with its high level of pattern heterogeneity, is available. Thermal Infra Red Remote sensing allows spatializing land surface temperature(LST), a case study in Changchun in northeast China was carried out, further analysis referred to quantifying spatial patterns of urban heat field and land use, based on topographic maps in 1990s and Land sat TM images in 1993 and 2005. The results showed there were changes in spatial patterns of urban thermal environment, and it was consistent with the direction of urban expansion. Moreover, LST existed differences on different underlying surface, the LST was the highest on the industrial land, followed by commercial land, public land and transportation land, the lowest was on the surface of water, followed by urban green land. In all, urban heat island effect had a trend of increase.