Research on Industry Gradient Transfer at the Gateway Cities of Chengdu-Chongqing Economic Zone

Baced on reconstructing urban space hierarchy of the gateway cities in Chengdu-chongqing Economic Zone with system clustering method(HCA), and using improved gravity model to analyze the Chengdu-chongqing dual-core metropolitan area space radiation effect on eight gateway cities in economic zone and applying the theory of location entropy respectively advantage of leading industry distribution situation of the gateway cities, the study found that: gateway cities of Chengdu-chongqing economic zone in the new period can be divided into that regarding dual-core metropolitan area, namely Chengdu and Chongqing as the drive, and Mianyang and Zigong as secondary economic center,and five regional central cities and a transformation city(Panzhihua) as a support level 4 space hierarchy. Industrial spatial layout has formed in a shape that Chengdu and Chongqing expressway for the goose first, Mianyang, Zigong for wild goose, and the rest of the cities for the goose tail. Industrial transfer mechanism supported by traditional policy area should be gradually replaced with economic zones and cities; Industry undertake order in economic zone should be determined by city space hierarchy and space gravitational radiation degree. Six big advantage leading manufacturing,such as electronic information, automobile and machinery equipment manufacturing, building materials and metallurgy, food and beverage, energy and chemical industry and agricultural food processing, have formed in industrial spatial gradient transfer order led by Chengdu-chongqing which are first city in economic zone.