Monitoring the greenbelt dynamic of tourist city Hangzhou based on remote sensing

摘要

Urban greenbelt plays a positive role in improving the ecology and harmonious interacting between human being and nature, especially in tourism city. Dynamic monitoring of urban greenbelt is very important to effective manage the city and construct the city. This study provides the scientific basis to analysis the change of city. This paper uses the ETM and SPOT image in 2003, 2007 and TM image in 1993 of the whole city of Hangzhou to calculate the urban greenbelt change. The result shows that, in the past ten years, because of the ceaseless development of Hangzhou and its intensive exploitation, the city has reduce a lot of greenbelt, and the spatial distribution do not meet the need of development of tourism city. So the greenbelt can not produce their ecological function effectively in ecological tourism city. Monitoring the Greenbelt Dynamic based on remote sensing is useful way to solve the problem in managing the city.