长江口滨岸带生态环境质量评价指标体系与评价模型

INDEX SYSTEM AND MODEL FOR EVALUATION OF ECOLOGICAL AND ENVIRONMENTAL QUALITY IN THE YANGTZE ESTUARY-COASTAL ZONE

基于生态系统理论，构建了由社会、经济、自然环境、自然灾害4个子系统和7个二级指标及29个三级指标组成的长江口滨岸带生态环境质量评价指标体系；以信息熵理论为基础建立了客观确定指标权重的综合信息熵模型法，并以层次分析法和综合信息熵模型法相结合确定评价指标权重值；采用灰色关联综合评价模型对上海滨岸带生态环境质量进行评价。对上海滨岸带宝山、浦东、南汇、奉贤、金山和崇明岸段1999～2003年5年间生态环境质量的时空变化特征和分级规律的研究表明：宝山滨岸带生态环境质量1999～2000年为较差，2001～2003年为中等；浦东、奉贤、南汇和金山生态环境质量一直处于中等水平；崇明生态环境质量1999、2000年为良，而2001～2003年为中。

The ecosystem of the Yangtze estuary-coastal zone is considered as consisted of four subsystems： society, economic development, natural environment and natural hazard. An integrated indicator system based on these four subsystems has been set up in the present study. Based on Entropy theory, the Information Entropy model （IEM） was established to calculate the weight of every index. The authors established Grey Relational Analysis （GRA） evaluation model to evaluate the ecological environmental quality of Shanghai coastal zone. At last, the coastal zones of Baoshan, Pudong, Nanhui, Fengxian, Jinshan and Chongming （in the Yangtze Estuary） were selected to the characteristics of ecological environmental quality quality in Baoshan coastal-zone was worse than other compare the spatio-temporal change and to classify from 1999 to 2003. The ecological environmental coastal zones during this period, but from 2001 to 2003, the ecological environmental quality was in the medium range. The ecological environment quality in Pudong, Fengxian, Nanhui and Jinshan coastal zones were among the medium level from 1999 to 2003 year. The quality in Chongming Island was in a better situation in 1999 and 2000, but from 2001 to 2003 year it became in the medium.