Main Article Content
Abstract
The barrier-free flow of financial resources among nodes (regions) is not only conducive to more efficient use of financial resources, but also plays an important role in alleviating the contradiction between supply and demand of regional financial resources and promoting regional economic development. Based on the theory of spatial interaction among financial gradation cities, the paper takes the expansion of commercial banks in the Yangtze River Delta as an example, and constructs the flow network of financial resources between cities. Using the social network analysis (SNA) and Dagum Gini coefficient decomposition method, the paper analyzes a series of problems such as the development of the financial resources, flow path selection and flow coordination during the period 2008- 2014. The conclusions can be drawn as follows: (i) the flow density between prefecture-level cities is the largest, which grows rapidly as time goes by, followed by county-level cities to prefecture-level cities and the flow density between other sorts of cities is relatively small. (ii) The flows of financial resources between prefecture-level cities presents typical features of homogeneous diffusion, while the flows from prefecture-level cities to counties and other sorts of cities has the feature of conditional diffusion. Flow barriers between provincial level border holds the biggest effect, followed by the differences of economic and financial development level between the prefecture- level cities and county- level cities. Among the effects of condition, Provincial-level borders have the greatest impact, followed by urban economic gaps and financial development gaps. (iii) The degree of variance in financial resource inflows within county-level cities is the largest, and the inflow of financial resources in country-level cities has a tendency of Matthew effect. It shows that in the Yangtze River Delta, the trend of integration only exists between prefecture-level central cities. Moreover, the radiation effect of central cities on its financial hinterlands is not strong which should be further strengthened. Therefore, on the one hand, the integration policy at macro-level such as "regional financial coordination policy" and "regional trust system construction" in the urban agglomeration of this region should cover the country-level cities. On the other hand, country-level cities themselves (especially the backward countries) should also make great efforts to improving the current economic and financial environment by narrowing the gap between the cities to reach the goal of Planting Phoenix trees well to attract Phoenix.