Research On The Internal Competition And External Interaction Of Liaoning Port Group Under Supply Chain

With the deepening of economic globalization,the market competition among port enterprises has become increasingly fierce,the competition mode has changed from traditional individual competition to competition on the whole supply chain of port enterprises.Under the background of "One Belt and One Road" development initiative,the port,as an important node in the supply chain,an important carrier connecting domestic and foreign freight trade,logistics warehousing,has brought good development opportunities for the coastal region.Therefore,under the port supply chain,exploring the internal competition and external interaction development of Liaoning port group plays an important role in realizing the win-win situation on both upstream and downstream members of port supply chain.Based on port supply chain,firstly,this paper explores the development status of Liaoning coastal port groups,the six ports can be divided into Dalian port group and Yingkou port group;Secondly,based on the Hotelling price competition model,under Nash equilibrium and Stackelberg equilibrium,it analyzes the game strategy behavior of two port enterprises,and explores the internal competition among port enterprises within the port groups;Then,the interactive development of Liaoning port groups and its external environment is studied by using vector autoregressive model.Finally,some suggestions are put forward on the development of Liaoning coastal port groups and port service supply chain.Also,some management enlightenments are obtained.There are three conclusions as follows: first,under Stackelberg condition,the optimal pricing,equilibrium revenue of port enterprises in Dalian port and Yingkou port group are higher than those in Nash condition.Secondly,the optimal pricing of port enterprises decreases linearly with network externality,port enterprise of Dalian port group decreases linearly with the service level,port enterprise of Yinkou port group increases linearly with the service level,affected by service level and intensity of network externality,the equilibrium income of port enterprises shows different trends under different ranges;Finally,there is a long-term and stable equilibrium relationship between ports and economic growth.Port cargo throughput,regional GDP and comprehensive employment are all causal relationships,port cargo throughput has a greater impact on economic growth than economic growth on port cargo throughput.