交通基础设施建设对市场分割的影响研究

fter the implementation of the fiscal decentralization system reform, local protection has become a factor restricting the long-term development of the region. In the long term, it will hinder the promotion of China\'s market integration. In the case of the continuous improvement of the level of transportation infrastructure construction in China, it is of certain reference significance to discuss its influence on market segmentation to reduce market segmentation and promote the process of market integration in China. Based on the data of 30 Chinese provinces, autonomous regions and municipalities from 2001 to 2019, this paper explores the impact of China\'s transportation infrastructure construction on the degree of market segmentation from both qualitative and quantitative aspects. The results show that the construction of transportation infrastructure has a significant negative effect on market segmentation, the degree of opening to the outside world has a nonlinear effect on market segmentation index, and the government intervention and fiscal decentralization can inhibit the regional market segmentation to a certain extent.By using the mediating effect model test, it is found that transportation infrastructure construction can reduce the degree of market segmentation by promoting population mobility and improving local technology level.