Research on the spatio-temporal evolution of APEC trade network structure and its influencing factors
This article used social network analysis methods to explored the spatio-temporal evolution of the APEC trade network structure,the results shown that:1)The APEC trade net-work has formed a"double center"trade pattern dominated by the central area of East Asia with China as the core and the central area of North America with the United States as the core.With the transfer of the centrality center and standard deviation ellipse of the trade network nodes from east to west,the trade status of East Asia and Southeast Asia is gradually increasing,while that of North America is declining;2)China's centrality in the network has increased rapidly,and it surpassed the United States to become the first central economy in 2015,and the US's position in the network is relatively stable;3)The APEC trade network has formed three associations in East Asia,the Americas and Southeast Asia.The strong absorption capacity of East Asian associ-ations to Southeast Asian associations has led to the disintegration of Southeast Asian associa-tions;4)The circle structure of APEC trade network shows obvious characteristics of"core+sub-core+semi-periphery+edge",and the changes in the circle structure are more obvious.The Unit-ed States has always been in the core circle,and China rose to the core circle in 2015.The re-sults of QAP regression analysis show that the spatio-temporal evolution of APEC's trade net-work structure is mainly affected by factors such as economic scale,geographic distance,and trade freedom.
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