Abstract:

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 Ecoindustrial 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 ecoindustry 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 eco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.

Key words: ecoefficiency, main component analysis, Ecoindustrial Symbiosis System