成渝地区双城经济圈对外贸易协同发展研究OACHSSCD

Promoting the construction of the Chengdu-Chongqing Economic Circle is a major strategy to build a new development pattern of dual circulation.It is also an important strategic pivot for further promoting the development of the western region and regional coordinated development in the new era.The key to its construction is to adhere to the concept of integration and coordinated development.Foreign trade is an important component of China's open economy and the core pillar of the international external circulation.The coordinated development of foreign trade in the Chengdu-Chongqing Economic Circle helps to build an inland open comprehensive hub,and promote the upgrading of the development level of the Chengdu-Chongqing Economic Circle and the opening up of the western region,thereby achieving the goal of promoting development through opening up.Therefore,the paper firstly measures and compares the differences in trade openness between the Chengdu-Chongqing Economic Circle and the national average,the Yangtze River Delta,Beijing-Tianjin-Hebei,and Guangdong-Hong Kong-Macao Greater Bay Area urban agglomerations based on data from 2010 to 2020 and explores their causes.Then,based on Shapley cooperative game theory and Cobb Douglas function,this paper characterizes the trade cooperation relationship between Chengdu and Chongqing and the benefits of the participating parties.Through a combination of theory and numerical analysis,it proves the feasibility of foreign trade collaboration between the two regions,and proposes a collaborative implementation path on this basis.The research shows that the trade openness of the Chengdu-Chongqing Economic Circle is lower than the overall level of the country and the other three major regional urban agglomerations,possibly due to the opening-up strategy,homogeneous regional products,and higher trade costs,with high trade costs being the fundamental reason.The theoretical and numerical analysis results indicate that the synergy of foreign trade in the Chengdu-Chongqing Economic Circle satisfies both collective rationality and individual rationality,reducing trade costs and increasing trade benefits.Therefore,the coordinated development of foreign trade between the two regions is feasible,but this feasibility is only limited to the situation where the production of all parties remains unchanged or increases in scale returns.At the same time,it is found that the more participants there are,the greater the increase in cooperation benefits.In the pairwise collaborative alliance,the increase in benefits from government-enterprise cooperation is higher than that from intergovernmental and inter-enterprise cooperation.Finally,the paper proposes some possible implementation paths from three perspectives:inter-governmental collaboration,inter-enterprise collaboration,and the collaborative construction of an incorruptible and friendly relationship system between government and business in the two regions.These paths can reduce various trade costs and help improve trade openness.The paper provides new theoretical explanations and policy suggestions for the coordinated development and the upgrading of the development level of the Chengdu-Chongqing Economic Circle,which has reference value for enriching regional collaborative and open development theory,guiding the construction of the Chengdu-Chongqing Economic Circle,and promoting the western opening up in the new era.