The Yangtze River Delta Economic Measure And Analysis Based On The Gravity Model

Regional economic interaction is always an important content in research of economic geography and regional economic. Based on the matlab and the shortest distance matrix between the Yangtze river delta 25 cities, which is obtained by gravity model describing the regional interaction strength, we measure the strength of the economic interaction and membership degree in Yangtze river delta region, analysis Shanghai’s external economic interaction of temporal and spatial characteristics, and try to determine the direction of regional major economic interaction.The first chapter is an introduction, mainly introduces the background and significance, research ideas, etc. In this article, focus on reviewing the relevant inter-regional economic links between theoretical research, including research contents and purpose of economic ties. Finally, a summary of existing research and research-based gravity model proposed expansion of this article.The second chapter is the theoretical link between regional economic herein Measurement interpretation. First, a brief thought and research status of Regional Economic Linkage. Secondly, in turn introduces the theory of nodal analysis, reach ability analysis and gravity model. Finally combed the inter-regional economic linkages strength calculation of the basic framework.The third chapter is the empirical analysis section of this paper first, is based on the application of the relevant data node has studied the idea and analysis of all the cities in Yangtze River Delta Yangtze River Delta were grading, come to primary, secondary and tertiary urban centers. Second, the application of reach ability analysis estimates the lower center of the city and the city’s senior center accessibility. Finally, the application of gravity model estimates the strength of economic ties and membership Yangtze River Delta cities. This paper estimates the 2007 on the strength of economic ties with the membership in 2012, and that analysis of urban development between the Yangtze River Delta economic ties and inter-regional comparative analysis.The fourth chapter is a summary of the above analysis to make the system, and puts forward some suggestions.The investigation shows:the total economic interaction in Yangtze River delta regions shows large gap and obvious grade characteristic; regional diversities of regional economic interaction are evident; the strength of foreign economic relations in Shanghai is large and shows a clear distance-decay law. Nanjing and Hangzhou have weak inter-provincial economic impact, whose central position needs to be enhanced. The economic interaction between the urban circle of Suzhou, Wuxi and Changzhou and Shanghai is tight. According to the measurement and comparison of regional economic interaction, the recognition of main economic relation direction in the entire province not only benefit to the clarification of regional economic development of spatial orientation but also benefit to the coordination of economic interaction and cooperation within and across regions.Therefore, this article from the stimulating effect of the Yangtze River Delta on China’s economic development and its own momentum problem starting the intensity measured by the study of the economic ties between the regions concerned have been combing the paper will determine the gravity model as a basis for analysis, while the application of nodal analysis and reach ability analysis of economic ties and membership strength between various cities in Yangtze River Delta was calculated.