关键词: 城市规划, 生态变化, 遥感, 福州

Abstract:

In recent years, the urban built-up area continues to expand along with the continuous improvement of urbanization degree. Also, the property of urban land is changing. In various types of urban planning land, different urban construction plannings can cause different ecological effects. The study on the differences and the causes of their formations can provide a good decision support to urban planning managers, and it is of great significance for the construction of an ecological livable city. In this paper, two Landsat images of 2009 and 2013 were utilized to computer the Remote Sensing Ecological Index (RSEI). Combined with the newly approved Urban Master Planning of Fuzhou City by the State Council of China, five planning classes of the master planning, with 22 selected plots, were investigated to reveal their ecological changes before and after the implementation of construction planning. It is found that the ecological qualities of the five classes are all declining, which indicates an overall drop down in the RSEI value by 12%. Among them, the RSEI of the industrial class falls by 18% and the ecological degradation of the industrial class is the most sever one. At the same time, the ecological quality of the municipal utilities class falls by 14%, the ecological quality of the residential class falls by 11%, the ecological quality of the administration and public services class falls by 8%, and the ecological quality of the commercial and business facilities class falls by 6%. The main factors which lead to the degradation of ecological quality after the completion of urban planning are the significant decrease in vegetation and water, and the considerable increase in coverage for built-up impervious surface. Combining with the research results of this paper, we also put forward suggestions for the urban planning management department.

Key words: urban planning, ecological change, remote sensing, Fuzhou