关键词: 长江经济带发展战略, 绿色创新能力, 准自然实验, 中介效应

Abstract: Green innovation is an inevitable choice for green development and economic transformation. The study uses the implementation of the Yangtze River Economic Belt Development Strategy as a quasi-natural experiment to test the policy effect and its mechanism using Chinese provincial panel data from 2008 to 2019, the difference-in-difference method as well as the mediating effect model. The results show that: The Yangtze River Economic Belt development strategy has a significant positive impact on regional green innovation capacity, and this benchmark regression result passes six robustness tests. The heterogeneity analysis shows that the positive promotion effect of the development strategy of the Yangtze River Economic Belt on the regional green innovation capability shows a decreasing pattern in the lower, middle and upper reaches of Yangtze River, and there is obvious regional heterogeneity. The mechanism test shows that the development strategy of the Yangtze River Economic Belt can improve the regional green innovation capability by promoting environmental regulation, new urbanization and innovation investment. Among them, environmental regulation plays a complete mediating role, and new urbanization and innovation investment play a partial mediating role. The paper provides certain experience and evidence for the provinces along in the Yangtze River Economic Belt to promote their green innovation capacity.

Key words: Yangtze River Economic Belt Development Strategy, Green Innovation Capability, Quasi-natural Experiment, Mediating Effect