Analysis on the seasonal changes of urban thermal landscape pattern and its application
Urban Heat Island (UHI) is a special problem generated in the process of urban development, and has become a kind of urban environmental hazard. Thermal landscape is a new method to study the spatial pattern of urban heat island. This study analyzed seasonal changes of the urban thermal landscape in Xiamen city, using Landsat ETM+ thermal images acquired on five different months in 2002. Landscape metrics were utilized to quantify the changes in urban thermal landscape pattern. Results showed that the urban heat island in Xiamen is strongest in summer, moderate in spring and autumn, and weakest in winter. This is caused by the seasonal dynamics of both anthropogenic heat release and solar radiation absorbed by the urban surface. 26 thermal pollution sources were identified, including 18 industrial ones. This study will provide support for environmental protection decision-making, energy use, and urban planning and management.
国家科技期刊平台
NSTL
万方数据
维普
