中国的城镇化推进与区域创新——来自卫星灯光数据的经验证据

基于卫星监测的夜间灯光数据构造的夜间灯光强度表征城镇化水平及专利授权数度量区域创新能力,利用2006—2017年中国286个地级市面板数据,就城镇化水平对区域创新的影响及其作用机制进行了实证考察.实证发现:①城镇化水平显著提升了区域创新能力,且这种正向作用具有显著的空间溢出效应和区域异质性;②城镇化对区域创新的促进作用存在门槛效应,当城镇化水平跨过单一门槛值,其对区域创新的作用逐渐增强;③中介效应模型检验结果显示,城镇化推进可以通过创新要素流动与产业结构升级来提升区域创新能力.研究结论为积极稳妥推进城镇化建设、促进创新型国家建设提供政策启示.

Urbanization Promotion and Regional Innovation in China:Empirical Evidence from Satellite Light Data

The constructing of night-time light intensity based on satellite-monitored night-light data and granting of patent measure,respectively, the urbanization level and regional innovation capabilities, using panel data of 286 prefecture-level cities in China from 2006 to 2017, conducts an empirical investigation on the impact of urbanization on regional innovation and its mechanism. The empirical findings: (1) The improvement urbanization level has a significantly positive effect on regional innovation, and this positive effect has significant spatial spillover effects and regional heterogeneity. (2) Urbanization has threshold effect on regional innovation. When the level of urbanization crosses a single threshold, its effect on regional innovation is gradually enhanced. (3) We use mediation effect test to verify that the promotion of urbanization can enhance regional innovation capabilities by promoting the flow of innovation factors. The research conclusions can provide inspiration actively promote the construction of urbanization and promoting the construction of innovative country.