Abstract
This study utilizes the quasi-natural experiment of China's high-speed rail opening and examines the impact on corporate green innovation using green patent data from Shanghai and Shenzhen A-share listed companies between 2007 and 2021.The difference-in-difference model is employed to empirically test the relationship between high-speed rail opening and corporate green innovation, as well as to analyze the underlying mechanisms driving this relationship. The research findings indicate a significant positive association between China's high-speed rail opening and enterprise green innovation, indicating an improvement in green innovation levels following the introduction of high-speed rail. The impact mechanism involves the enhancement of government governance capacity and overall factor productivity within enterprises. Further sub-sample test found that the opening of high-speed rail promoted enterprises' green innovation mainly in enterprises with low environmental uncertainty and enterprises in central and western regions.
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