国家创新型城市政策对城市绿色发展绩效的影响——基于技术创新、资源依赖的中介作用

The Impact of National Innovation-oriented City Policy on Urban Green Development Performance——Based on the Mediating Roles of Technological Innovation and Resource Dependence

以2008年开始实施的国家创新型城市试点为准自然实验,基于2003~2016年城市级别数据,采用倾向得分匹配和双重差分模型相结合的方法检验国家创新型城市政策对城市绿色发展绩效的影响及具体的影响渠道。结果表明:国家创新型城市政策显著带动了城市绿色发展绩效;技术创新和资源依赖是具体的影响渠道。即,国家创新型城市政策通过促进技术创新、降低城市对自然资源依赖度以推动城市绿色发展。因此,政府应大力推进国家创新型城市建设,积极摆脱当地的资源依赖困境,促进技术创新。

In this paper,the national innovation-oriented city quasi natural experiment was carried out since 2008.Based on the city-level data from 2003 to 2016,the method of propensity score matching and dual difference model is adopted to test the impact of the national innovation-oriented city policy on the performance of urban green development and the specific impact channels.Results show that,the national innovative city policy has significantly promoted the performance of urban green development.Technological innovation and resource dependence are the specific channels of influence.In other words,the national innovative city policy promotes the green development of cities by promoting technological innovation and reducing the dependence of cities on natural resources.It puts forwaord some suggestion that the government should vigorously promote the construction of national innovative city,and actively get rid of the dilemma of local resource dependence,and promote technological innovation.