Research on the Impact of High-Speed Railway on County Economic Growth in Northern Jiangsu Province Based on DID Model

Abstract

The development of county economy is the top priority of rural revitalization. This paper selects the data of 17 counties in northern Jiangsu from 2010 to 2020, and uses the Difference in Difference (DID) model to measure the impact of high-speed rail opening and operation on the county economy in northern Jiangsu from four aspects: economic density, population density, location entropy of the tertiary industry, and market potential. At the same time, the negative impact of the COVID-19 was eliminated, which further verified the robustness of the results of this paper. The research results showed that the opening of high-speed railway had no significant impact on the economic density and population density of Subei County, had a significant role in promoting the market potential, but had a significant inhibitory effect on the location entropy of the tertiary industry; This paper suggests strengthening the node effect by actively integrating into the regional network; Innovate the development path and strengthen the county characteristics; Improve basic support and enhance development potential; Improve the coordination and cooperation mechanism, promote regional common development and other ways to enhance the economic effect brought by the opening of high-speed railway.