| The rapid development of global economic integration has accelerated the intensity,breadth,and depth of economic factor flows,and the economic connections between regions have become increasingly dense.The trend of flattening and networking in economic development has become increasingly significant.Economic connections are a necessary condition for promoting regional economic growth and an important basis for assessing whether the regional economic development status is good.The Beijing Tianjin Hebei region is one of the most dynamic,innovative,and populous regions in China’s economy,and is an important engine for driving China’s economic development.However,due to the absolute dominance of the Beijing Tianjin "dual core" in economic development,the Beijing Tianjin Hebei urban agglomeration has long faced the problem of imbalanced economic development,and increasing regional economic connections is the only way to achieve regional economic integration.The "park economy" is an important form of urban economic development,and the economic connections between industrial parks are an important driving force for the formation and development of regional economic integration.Exploring the cross regional economic connection network of the Beijing Tianjin Hebei Industrial Park can further deepen the integrated development of urban agglomeration economy,and has important guiding significance for constructing a reasonable regional economic pattern and optimizing the structure of the regional economic system.Starting from the theories of regional economic growth and spatial interaction,this article defines the connotation of the economic connection network of industrial parks and sorts out the practical conditions and processes for the formation of the economic connection network of industrial parks in the Beijing Tianjin Hebei region.On this basis,the applicability of the Gravity model is analyzed,and the revised Gravity model is adopted to calculate the economic gravity matrix of the industrial park,to clarify the selection of network nodes and the determination of sidelines,and then to build the economic connection network of the Beijing Tianjin Hebei industrial park in 2013,2017,and 2021.Furthermore,with the help of Gephi software,a topological diagram of the economic connection network of the industrial park is drawn to visually analyze the evolution of the network structure.Using social network analysis methods,this study delves into the structural characteristics of the economic connection network of the Beijing Tianjin Hebei Industrial Park from two aspects: overall network and individual network,identifies key park nodes in the network,and explores the economic development and collaborative cooperation status of the Beijing Tianjin Hebei Industrial Park from a comprehensive perspective of qualitative and quantitative analysis.Through the multi-level and multi-angle in-depth analysis of the economic connection network of Beijing-Tianjin-Hebei Industrial Park,the research finds that:(1)the economic connection network of Beijing-Tianjin-Hebei Industrial park is gradually becoming mature.On the whole,the network structure gradually develops from loose to tight and complicated,and the degree of interaction and mutual influence among parks keeps increasing,gradually showing a two-way attraction network structure layout.The centrality of nodes in the network continues to improve,the economic status is gradually stable,and the network system tends to be mature.(2)The node difference of Beijing-Tianjin-Hebei industrial parks is increasingly obvious.From 2013 to 2021,the network gradually presents an obvious Beijing-Tianjin-Hebei circle layout.The park in Beijing is continuously consolidated in the core area of the network,and the economic radiation force occupies a dominant position in the network.The park in Tianjin is distributed in the periphery of Beijing as a secondary core node,while the park in Hebei is distributed in the outermost layer of the network as a marginal node.There are many isolated and weak nodes.(3)The network presents an obvious core-edge structure.The economic connection network of the Beijing-Tianjin-Hebei Industrial Park is characterized by a few super centers radiating to the periphery.The development of the network is dominated by a few parks,and the overall network presents an obvious core-edge structure.From 2013 to 2021,although the density values of the core area and the fringe area keep increasing,the economic development pattern of the park has not changed fundamentally,and the gap between the fringe area and the core area still shows a trend of expanding.(4)Industrial parks form subgroup relationships with obvious adjacency orientation.On the whole,the Beijing-Tianjin-Hebei Industrial Park has formed a relatively stable subgroup relationship,but there are great differences in economic relations among different subgroups,and the number distribution of parks in each subgroup is also extremely unbalanced.The division of subgroups shows obvious adjacency orientation characteristics.Parks in the same provinces and cities are more likely to gather into small groups,and the agglomeration state is unreasonable,which is not conducive to the further development of the network and the formation of the regional economic integration of Beijing,Tianjin and Hebei.Based on the above research conclusions,countermeasures and suggestions for network optimization are put forward from three aspects: improving the coordinated development management system of Beijing-Tianjin-Hebei Industrial Park,optimizing the vertical and horizontal correlation structure of the economic connection network of Beijing-Tianjin-Hebei Industrial Park,and creating a good environment for the development of the economic connection network of Beijing-Tianjin-Hebei Industrial Park. |
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