双试点政策对绿色全要素生产率的影响研究 ——基于低碳城市和创新型城市双试点政策的准自然实验

A Study on the Impact of Double Pilot Policies on Green Total Factor Productivity: Quasi natural experiment based on dual pilot policy of low-carbon city and innovative city

摘要:

为推动高质量发展，实现经济绿色转型，近年来，中国政府不断扩大低碳试点城市和创新型试点城市的范围。本文将低碳城市和创新型城市双试点作为研究对象，基于2007年至2019年中国282个城市的面板数据，使用多期DID模型实证检验双试点城市建设对绿色全要素生产率的影响效果及其作用机制。实证结果表明，相较于非双试点城市，双试点政策能显著促进城市绿色全要素生产率的增长，并且，相较于单试点政策，低碳城市和创新型双试点城市建设对地区经济绿色发展的推动作用更为明显。进一步研究发现，双试点城市可以通过提升城市绿色技术创新水平与优化产业结构两条途径促进绿色全要素生产率的增长。异质性分析表明，双试点城市建设对东部城市和非资源型城市绿色全要素生产率的促进作用更为明显。

Abstract:

In order to promo1te high-quality development and realize green transformation of the economy, the Chinese government has been expanding the scope of low-carbon pilot cities and innovative pilot cities in recent years. This paper takes the dual pilot low-carbon cities and innovative cities as the research object, and uses a multi-period DID model to empirically examine the effect of dual pilot city construction on green total factor productivity and its mechanism of action based on panel data of 282 cities in China from 2007 to 2019. The empirical results show that compared with non-dual pilot cities, the dual pilot policy can significantly promote the growth of green total factor productivity in cities, and, compared with the single pilot policy, the construction of low-carbon cities and innovative dual pilot cities has a more significant effect on the green development of regional economies. Further study finds that the dual pilot cities can promote green total factor productivity growth through two ways: improving the level of green technology innovation and optimizing industrial structure. The heterogeneity analysis shows that the dual pilot city construction has a more obvious role in promoting green total factor productivity in eastern cities and non-resource-based cities.