Influence of High-speed Rail Opening on Green Technology Innovation and Its Mechanism
Based on the theoretical mechanism of the impact of high-speed railway on green technology innovation,this paper takes the opening of high-speed railway as a quasi-natural experiment.With the panel data of 284 prefecture-level cities in China from 2008 to 2021 as samples,the paper uses the different-in-differences(DID)method and the spatial Durbin model to evaluate the impact of high-speed railway on green technology innovation and its mechanism.The findings are as follows.The opening of high-speed railway significantly improves green technology innovation,and this conclusion is still valid under the series of robustness tests.Heterogeneity analysis shows that the opening of high-speed railway has a more significant promoting effect on green technology innovation in the western region and small cities.The mechanism analysis shows that the agglomeration of financial resources and innovation factors are the channels for the opening of high-speed rail to affect green technology innovation.