The Interactive Development Between The Port And City Considering The Sea-rail Multi-modal Transportation

The interactive development of port and city has been a hot topic of academic research.Shenzhen,as a typical port city in the world with synchronous and rapid development,is more worthy of being studied.In recent years,the contradiction of transportation and land use between Shenzhen port and city has become increasingly prominent.In order to alleviate this contradiction,the Shenzhen government and Shenzhen port have taken a series of measures to vigorously develop sea-railway combined transport.While,the situations in some other cities are contrary to our intuition that "sea-rail intermodal transport is beneficial to the interactive development of port and city".Not all cities are suitable for the development of sea-rail intermodal transport.Based on the above background,this paper introduces the relevant indicators of sea-railway combined transport into the criteria system designed in the quantitative analysis.First,a correlation regression model was established to conduct a quantitative analysis of the economic interaction between Shenzhen port and city.Then,a Granger causality model was established to explore the causal relationship between the number of lines of sea-rail intermodal transport in Shenzhen port,port throughput and urban economic growth.Secondly,the spatial scale of Shenzhen port city is measured by RCI index,and the spatial relationship of Shenzhen port and city is analyzed quantitatively.Finally,the quantitative criteria of port and city spatial relationship is combined with other criteria of port and city economic relationship.The comprehensive evaluation criteria of Shenzhen port and city is calculated by using principal component analysis,and then the model of subordination coordination degree is established to calculate the degree of coordinated development of Shenzhen port.Through the research and analysis,the main conclusions are as follows: first,forShenzhen port,sea and rail combined transport plays a leading role in urban economy;Secondly,at least in the next one to two years,the increase of the number of sea-rail intermodal transport lines at Shenzhen port will have a significant impact on the container throughput of Shenzhen port and the economic growth of Shenzhen.Thirdly,Shenzhen's port function should be stronger than city function,and in the interaction system of port and city,Shenzhen port should play a stronger role;Fourth,the coordination degree of Shenzhen port city system is not stable enough,which needs to be further strengthened.