Research Of Chinese Definition Of Metropolitan Spatial Extent And Types

The metropolitan area is the advanced stage of the process of urbanization and it is also the high-level form of integration between region and city. As a space allocated form shaped by the interaction between region and city, it plays a key role in the promotion of regional economic and urban sustainable development. Summing up the idea of metropolitan area's evolution at home and abroad, we can outline the metropolitan area is a gathering area of economic and social, which has the core cities, with a central cohesive, multi-dimensional continuity, mutual benefit and win-win nature, and characteristics of cross-border development and many types. On this basis, it proposed that we define the metropolitan area from multi-dimensional perspectives view, that is to say on the premise of highlighting central city, from continuity to define the metropolitan area, mainly related to three qualitative main factors, which is socio-cultural, physical geography unit and administrative,and gravity, time and space, scale, quality as well, which reflect in economic convergence, spatial and temporal distance, scale level, and effective level from a quantitative point. Accordance to define a metropolitan area from multi-dimensional perspectives, defining the area in space, which selects the Yangtze River Delta to do empirical analysis, as it is significance of typical representative and deeply analyzes China's urban agglomerations in this logic analysis, initially getting the approximate spatial extent 18 metropolitan areas in China. Then from multiple perspectives of the center city, the size of the total, stage of development, coordinated development, developing a different reference system, to identify categories that 18 metropolitan areas subordinated, we hope that can provide scientific guidance for research of metropolitan area theory and construction of metropolitan area's practice...