An Empirical Analysis Of Port And Urban Economy Relationship Based On The Comparison Between The Yangtze River Delta And The Pearl River Delta Port Group

Port is the window of a country or a region to connect the external world,it plays an increasingly important role in a country's foreign trade in the background of economic globalization.In 2015,China put forward the ‘21st-Century Maritime Silk Road',which is a national top strategy,and it is a new opportunity for the port city in the east and southeast of China to develop.However,there is still no clear law can learn from in coordinating the relationship between port city economic development and port development.In this paper,we study the port-city relationship by analyzing the Yangtze River Delta port group and the Pearl River Delta,then we find the development differences between the two port groups and summarize the general rules of port-city relationship.In specific operation,we first use the relative concentration index to analyze the port-city relationship development status of the Yangtze River Delta port group and the Pearl River Delta port group,and we found that the port-city relationship of the Yangtze River Delta port group gradually tends to be coordinated,while the port-city relationship of the Pearl River Delta port group is still in an uncoordinated state.Then we use gray correlation analysis to analyze the specific correlation between port city economic development and port development,we found that GDP and industrial output have high gray relational degree with the port cargo throughput,and the overall gray relational degree of the Yangtze River Delta port group is higher than the Pearl River Delta port group.Based on the results of gray correlation analysis,the impulse response analysis shows that the growth of GDP and industrial output have a significant effect on the port development in short term,while port development has no obvious impact on port city economic development except for the export-oriented port city.