Research On The Status And Dynamic Evolution Of Urban System Of Nanjing Metropolitan

Along with rapid progress of economic globalization, traditional isolated development of modern city has changed into a mode characterised by resource-sharing, economic cooperation, regional division of labor and cooperation, Industry competition and the joint; and such progresses enhance the formation of metropolitan zone. In China, construction of metropolitan zone is a significant way to promote urbanization and modernization. To some extent, economic development in metropolitan zone considerably boost development of regional economy.The metropolitan based on industry gathering is the most dynamic region of China. Nanjing metropolitan zone with its cross-province characteristic has great significance over economic development of central China. As an extension of the Yangtze River Delta to inland, the integration, improvement and division of labor of Nanjing metropolitan area will greatly promote the economic development of the central region.Based on this, this paper study Nanjing metropolitan area.first, analyses the status quo and problems of urban system of Nanjing metropolitan zone by using primacy ratio and quotient of location. Second, applies factor analysis and modified field model to analyse the evolution mode of metropolitan zone and reveal its regular pattern of development.On the basis of these studies, combine the problems with the Nanjing metropolitan area and development of the law, tunning suggestions are provided based on closed analyse of problem and development pattern of Nanjing metropolitan zone.This paper is divided into three mainly parts. The first part analyses the status quo of Nanjing metropolitan zone. Hierarchical size, spatial structure and functional structure are included to calculate the primacy ratio and quotient of location; development of urban system is compared between different years. It is found that, in the hierarchical size aspect, most cities enjoy well and concentrated development, while a few cities such as Huai’an Chaohu and Chuzhou remain in low level of urbanization and concentration. Also, a spatial structure characterised by sole core with two layers, one axis with three channels has formed, but some area still has low density of cities and poor communication. In the functional structure aspect, the core cities’functions are uncompleted; and specialized functions of each city are unclear; the economic development is lack of holistic vision.The second part analyses the dynamic evolution of Nanjing metropolitan zone. We modified two traditional field model with construction of city influence-index and measurement of area accessibility. Factor analysis and fields model are applied to research the annual dynamic evolution of metropolitan. In conclusion, synchro increases can be detected between city’s influence area and its influence index. City’s influence area enlarge along with time; and communications between different area enhanced along with the development of metropolitan zone. Balanced development gradually take the place of solely advanced city. The influenced area of core cities enlarged and covered neighbourhood, which is promoting the balanced economic development of the whole metropolitan zone. The enlargement of influence area rapidly increased at early stage and then stay in stable increase rate.The third part provides tunning suggestion from three aspects,namely Hierarchical size, spatial structure and functional structure, based on previous research over status quo and problems of Nanjing metropolitan zone.