The Ecological Service Function Comprehensive Assessment of Wetland in Beijing

摘要

The assessment of wetland ecological service function provided important reference information for management.Based on spatial information technology, this paper firstly made use of multi-source data including remote sensing data, field measurement data and society statistics data etc. Then according to the assessment framework of MA, the composing factors of wetland function were analyzed with the help of the analytic hierarchy process (AHP) and the comprehensive and quantitative index, in order to assess the importance of the ecological service function in Beijing wetland.Finally the paper zoned the research area based on the importance of wetland function. The results showed that: (l)The regulating and provisioning function were most important in Beijing wetland on the type of function, the cultural function was less, and then the supporting function was the minimum.(2) The sequence from high to low in the function grade zoning of all county and district wetland was listed as below.Miyun was level 4. Pinggu, Tongzhou, Haidian, Mentougou were level 3. Fangshan, Chengsiqu, Chaoyang, Yanqing and Huairou.were level 2.and Others were level 1.