中国城市群空间结构对科技创新的影响

Impact of Spatial Structure of Urban Agglomeration on Technological Innovation

空间结构不仅影响区域经济发展,也会影响区域科技创新,目前相关文献大多关注前者而后者亟待进一步探讨。基于2005—2020年我国19个城市群的面板数据,实证分析了城市群空间结构对区域科技创新的影响。研究发现:(1)在解决了模型的内生性之后,总体上单中心结构有利于城市群的科技创新。(2)异质性分析表明,单中心结构城市群在发达地区抑制了科技创新,而在欠发达地区则有利于科技创新水平提升;多中心结构的城市群在发达地区可以促进区域科技创新水平的提升,而在欠发达地区则不利于科技创新。(3)进一步分析表明,在我国东部地区较为发达的城市群,多中心结构有利于区域科技创新水平的提升;而对于中部、西部或东北地区发展条件相对较好的城市群,则是单中心结构促进了科技创新水平的提高。

Spatial structure not only affects regional economic development,but also affects regional technological innovation.Based on the panel data of 19 urban agglomerations in China from 2005 to 2020,this paper empirically analyzes the impact of spatial structure of urban agglomerations on regional technological innovation.It's found that:1)After addressing the endogeneity of the model,the overall monocentric structure is conducive to technological innovation in urban agglomerations.2) The results of heterogeneity analysis indicate that monocentric structure of urban agglomerations inhibits technological innovation in developed regions.In underdeveloped areas,by contrast,it is beneficial to improve the level of technological innovation.The polycentric structure can promote the improvement of regional scientific and technological innovation level in developed areas,while it is not conducive to the development of scientific and technological innovation in underdeveloped areas.3) Further analysis shows that in the more developed urban agglomerations in the eastern region of China,the polycentric structure is beneficial for improving the level of regional scientific and technological innovation.The monocentric structure promotes the improvement of technological innovation level in urban agglomerations with relatively good development conditions in the central,western,or northeastern regions.