区域产业政策与城市绿色创新——来自中国资源型与老工业城市的证据

Regional Industrial Policy and Urban Green Innovation:Evidence from Resource-Based and Old Industrial Cities in China

绿色创新是推动新旧动能转换的关键,是新发展理念下实现经济社会与生态文明协同发展的有效手段。基于2009-2019年中国资源型与老工业城市面板数据,使用双重差分模型考察产业转型升级示范区政策对城市绿色创新能力的影响。结果显示:产业转型升级示范区政策能够有效提升城市绿色创新能力。机制分析表明,产业转型升级示范区政策主要通过产业结构调整效应和创新投入效应提升城市绿色创新能力。异质性分析表明,产业转型升级示范区政策对不同城市特征和不同绿色创新类型具有差异性影响,具体表现为对资源型城市和复合型城市、经济发展水平较高、工业化程度较高城市绿色创新能力的提升效果更为明显,对策略性绿色创新的促进作用更大。因此,可进一步扩大产业转型升级示范区试点城市范围,推动产业结构转型升级,加大城市创新投入,提升城市绿色创新能力。

Green innovation is the key to promot the transformation of old and new driving forces,and an effective means to achieve coordinated development of economy,society,and ecological civilization under the new development concept.This article is based on panel data of resource-based and old industrial cities in China from 2009 to 2019,and uses the difference-in-differences method to examine the impact of industrial transformation and upgrading demonstration zone policy on urban green innovation capabilities.The study finds that the policy of industrial transformation and upgrading demonstration zones can effectively enhance urban green innovation capabilities.Mechanism analysis shows that the policy of industrial transformation and upgrading demonstration zones can enhance urban green innovation capabilities through the effects of industrial structure adjustment and innovation investment.Heterogeneity analysis shows that the policy of industrial transformation and upgrading demonstration zones has a more significant effect on enhancing the green innovation capabilities of resource-based cities and composite cities.Moreover,this policy has varying impacts on different urban characteristics and types of green innovation.Specifically,the policy of the industrial transformation and upgrading demonstration zone has significantly promoted the green innovation capacity of cities with higher levels of economic development and industrialization.In terms of different types of green innovation,the policy of the industrial transformation and upgrading demonstration zone has a greater promoting effect on green practical innovation.