中文摘要：

生态工业园区是我国发展循环经济的重要载体，如何准确评价当前我国生态工业园区的生态效率对生态工业园区建设和发展有重要的意义。以生态效率和产业生态学理论为基础，参照国家环保总局《综合类生态工业园区标准（试行）》，建立了产业共生系统生态效率评价指标体系，并以主成分分析为基础，提出了产业共生系统生态效率评价方法。通过苏州高新区、苏州工业园区生态工业园和无锡新区生态工业示范园区等3个工业园区的案例研究得出样本指标中对生态效率影响最大的3个主成分和样本主成分的排名，以及生态效率进行比较排序，发现苏州工业园区生态工业园总体生态效率最高，无锡新区生态工业示范园区其次，苏州高新区则相对较差。根据各园区在各主成分的效率比较，指出各园区有待改进的环节。具体说明主成分分析在生态产业共生系统生态效率中的运用及优点。

英文摘要：

Eco-Industrial Park is a kind of important carrier of circular economy. Appraising exactly eco- efficiency of Eco-Industrial Park has an important significance for the development of Eco-Industrial Park in China. Based on the theory of eco-efficiency, industry ecology and Standard for Sector-integrate Ecoindustrial Parks （On trial）, the paper proposed the circular economy indictor system. The evaluation method of main components analysis was put forward aiming at present assessment of eco-efficiency,and through case study of three industry gardens that were Suzhou National New ＆ Hi- Tech Industrial Development Zone （SND）, Suzhou Industrial Park eco-industry park （SIP） and Wuxi New District ecoindustry park （WND）. Three main components which had maximal influence on eco-efficiency in sample index were got as well as grade and total grade of main in samples. The results showed that eeo-efficiency of SIP was the highest in the three parks and that of SND was the lowest. According to the evaluation results of different components, the weak links are identified respectively. In addition, application and advantage of main components analysis used in eco-efficiency of eco-industry symbiosis system were explained thoroughly.