应用生态学报2011，Vol.22Issue(2)：513-518,6.
崇明东滩海岸带生态系统退化诊断体系的构建
Construction of degradation diagnosis system for the ecosystems in Dongtan coastal zone of Chongming, Shanghai.
摘要
Abstract
Based on the " pressure-state-response ( PSR) " concept model, a degradation evaluation index system was constructed for the cropland. wetland. and inshore ecosystems in Dongtan coastal zone of Chongming. By using multiplication synthesis, a combination of analytic hierarchy process and entropy weight method, the weights of each evaluation index were obtained. and. through geographical space index quantification and spatial clustering , the degradation degree of each ecological system was analyzed. The results showed that the degradation degree of Dongtan coastal ecosystems in 2005 could be spatially classified into four classes. i. e. . class Ⅰ , class Ⅱ, class Ⅲ and class Ⅳ, with the degradation degree aggravated increasingly. For the cropland, wetland. and inshore ecosystems, the weight of heavy metals was the largest, being 0. 65 , 0. 20. and 0. 26, respectively. Bird diversity index. land use degree, and Spartina alterniflora coverage also had greater effects on wetland ecosystem, and their weights were 0. 26. 0. 16. and 0. 10, respectively. For cropland ecosystem, land use degree was also an important affecting factor. with the weight of 0.22.关键词
生态系统退化/指标体系/空间聚类/崇明东滩分类
资源环境引用本文复制引用
朱燕玲,过仲阳,叶属峰,栗小东,王丹..崇明东滩海岸带生态系统退化诊断体系的构建[J].应用生态学报,2011,22(2):513-518,6.基金项目
海洋公益性行业重点项目(200805080)资助. （200805080）
