An Exploratory Spatial Data Analysis of Regional Trade and Investment Coordinative Development——Evidence from 25 Cities of the Yangtze River Delta Region

In this paper,we use the principal components analysis to establish 8 indexes about the coordinative development degree of trade and investment in the Yangtze River Delta region.We find a tendency that trade and investment development in the Yangtze River Delta region is changing from in-coordination to coordination but the process is not steady.Based on the convergence theory within the economic growth theory,we make an empirical research on the economic differences between 25 cities in the Yangtze River Delta region from the perspectives of trade and investment.The empirical result shows there is a conditional convergence in the economy of the Yangtze Rive Delta region.And regional trade and investment coordinative development can help to narrow regional economic disparity.At last we put forward some suggestions on the harmonious development of trade and investment among regions from aspect of industries,government and entripises.