A Study on the Urban Economy Ecologization of Changjiang Delta

Eco-economy has been one of hot research fields with the execution of sustainable development. As the most developed district of China, Changjiang delta is regarded as the sixth megalopolis. At present, lots of studies are performed on economic development of Changjiang delta. In this paper, the concept of economy ecologization is discussed and the economy ecologization index system is set up with the hierarchical architecture model. Then the index data of the eight representative cities in Changjiang delta is collected. After that, the comprehensive evaluation on the economic system is carried out with factorial analysis method. The result indicated that the sequence of economy ecologization from the high to low is Shanghai, Nanjing, Suzhou, Wuxi, Ningbo, Hangzhou, Changzhou, and Yangzhou. Finally the cause is analyzed in the paper.