| The development of the shipping industry is related to the operation economic safety of the country,which is not only an important force to stimulate the economic growth,an important guarantee for safeguarding national security and overseas interests,but also an important link to communicate the world.The maritime trade deficit is regarded as the dominant index of the international competitiveness of the shipping industry,which directly reflects the development of a country’s shipping industry.At the same time,as an important part of international and domestic interconnection,maritime network construction is a key strategic choice for the construction of the maritime Silk Road.The maritime service trade network is actually derived from the transportation demand of goods trade,to some extent,the evolution of the trade network that covers the major ports and routes can reflect the structural changes in the demand network of marine services market.Therefore,it has become an important and urgent task to pay attention to and analyze the influencing factors of China’s maritime trade deficit.Firstly,this paper summarizes the literature at home and abroad,finds out the new perspective and data to study the maritime trade deficit;Secondly,through the definition of maritime trade deficit and the introduction of ASD theory,this paper demonstrates the relationship between ASD theory and maritime service trade deficit,using the social network analysis method to construct the demand network of marine service market and analyze the characteristics of demand network,and expounds the the change of the demand network of marine service market influences the maritime trade deficit;Third,based on the analysis of the core content of the ASD theory,the main factors that influence the characteristics of the maritime service trade and the change of the situation structure are established,and according to the theoretical basis,the paper puts forward the hypothesis of the impact index and constructs the influence factor model of the maritime service trade deficit with the structural equation model;Fourth,amos21.0 software is used to test the model,including the model fitting analysis and correction,the research shows that the openness degree of the maritime industry,the competitiveness of maritime service trade,and the tonnage of ships have an impact on the deficit of the maritime service trade,the gross tonnage of ship and the competitiveness of maritime service trade have the greatest impact on it;the density of the shipping market demand network,the centrality index also has an impact on the maritime service trade deficit,the enhancement of eigenvector centrality and degree centrality of the network are the most significant factors in reducing the trade deficit in marine services;Finally,the paper puts forward the countermeasures and measures to reduce the deficit of the maritime service trade from four aspects of the network structure,such as re-empowerment,re-connection,re-link and re-generation. |