| In the context of economic globalization,the coastal ports have developed rapidly as an important sea passage for foreign trade,among which the bohai sea port group plays an important role in the economic development of north China.However,with the rapid development of ports within the port group,the port scale has been expanding,and the hinterland is increasingly overlapping.At the same time,due to the unclear function and level division of ports within the port group,the homogenization competition within the port group is becoming increasingly fierce.Therefore,it is necessary to provide a new theoretical method for the hierarchical positioning of the port group and provide strategies for the development of competition and cooperation among ports.The main research work and contents of this paper are as follows:Firstly,this paper introduces the general situation of the bohai rim region,analyzes the irreplaceable important status of the bohai rim port group in the national economic development,the development status of the three sub-port groups,and the main problems existing in the bohai rim port group.Secondly,based on the main problems existing in the port groups around bohai sea,this paper puts forward the concomitant elements of cargo types and economic hinterland of the port groups around bohai sea.Then,through the index of cargo type relation and the improved gravitation model,the social network analysis model of cargo type and economic hinterland between the port groups in the bohai rim is constructed,and the social network structure measurement analysis and competition and cooperation relation analysis of the port groups in the bohai rim are carried out.Concurrence of in the end,this article will measure the results of the analysis,the relationship between social network structure as a new port level analysis indicators,bohai sea port group of level analysis,clear positioning analysis to make theoretical basis for port,finally from the bohai sea port group level orientation,dislocation development and establish a cooperation mechanism for the development of bohai sea port group of Suggestions are put forward. |