摘要
基于2003-2019年十九大城市群210个城市的面板数据,采用双重差分法,实证分析了国家中心城市建设对城市群创新能力的影响和作用机制。结果表明:国家中心城市的建设有效提升了城市群创新能力。异质性分析表明:国家中心城市建设对东部城市群创新能力提升效应高于中西部地区;国家中心城市规模越大,国家中心城市建设对城市群创新能力提升效应越明显;国家中心城市建设对城市群技术密集型行业创新能力的提升效应高于非技术密集型行业。影响机制表明:国家中心城市建设通过促进城市群功能分工,增强知识溢出效应,提升市场可达性和金融集聚度等途径影响城市群创新能力。进一步研究表明:国家中心城市建设对城市群创新能力的影响与空间距离呈现倒“U”型关系。同时,国家中心城市建设对城市群创新能力的提升效应取决于国家中心城市的发展质量,而不是拥有的数量。为此,要坚持以国家中心城市为核心推动城市群合理分工,积极提升国家中心城市综合实力,平衡国家中心城市的辐射效应和虹吸效应,合理规划国家中心城市的空间布局。
The national“14th Five-Year Plan”pointed out that the central city will be the guide to enhance the functions of the urban agglomerations,which means that the spatial development model with central cities and urban agglomerations as the main carriers will be the key to promote coordinated regional development in our country.As the spire of the national urban system,the national central city has great strategic significance for leading and driving the economic development of urban agglomerations and even the whole country.From the perspective of innovation,based on the panel data of 210 cities in the nineteen major urban agglomerations from 2003 to 2019,this paper empirically analyzes the effect of the construction of national central cities on the innovation ability of urban agglomerations and its mechanisms.The research results show that the construction of national central cities is conducive to the improvement of the innovation ability of urban agglomerations.And the results still remain robust by using different levels of data such as enterprises,industries,cities and different testing methods.The heterogeneity results show that the construction of national central cities has a higher effect on the innovation ability of urban agglomerations in eastern areas than in central and western regions;the larger the scale of national central cities expands,the more obvious the effect on improving the innovation ability of urban agglomerations is;the construction of national central cities has more effects on the innovation ability of technology-intensive industries than that of non-technology-intensive industries.The influence mechanisms indicate that the construction of national central cities affects the innovation ability of urban agglomerations by promoting the division of functions of urban agglomerations,strengthening knowledge spillover,and improving market accessibility and financial agglomeration.Further research shows that spatial distance is an important factor that affects the improvement of the innovation ability of urban agglomerations by the construction of national central cities.The influence of the construction of national central cities on the innovation ability of urban agglomerations has an inverted U-shaped relationship with spatial distance.Only a certain distance away from the national central cities can the effect of the national central cities on the innovation ability of peripheral cities be better brought into play.At the same time,the effect of the construction of national central cities on the innovation ability of urban agglomerations depends on the development quality of the national central cities in the urban agglomerations,rather than the number of them.The higher the development quality of national central cities,the better the innovation capability of urban agglomerations can be improved.This paper provides certain empirical evidences and policy inspirations for promoting China’s insistence on central cities leading the development of urban agglomerations and forming a spatial pattern of multi-polar support for regional coordinated development.The core conclusion is that the construction of national central cities can lead and drive the innovative development of urban agglomerations.Therefore,we must adhere to the national center as the core to promote the rational division of labor in urban agglomerations,actively enhance the comprehensive strength of national central cities,balance the radiation effect and siphon effect of national central cities,and rationally plan the spatial layout of national central cities.
作者
马为彪
吴玉鸣
MA Wei-biao;WU Yu-ming(School of Business,East China University of Science and Technology,Shanghai 200237,China)
出处
《科学学研究》
CSSCI
CSCD
北大核心
2023年第3期534-546,共13页
Studies in Science of Science
基金
国家自然科学基金面上项目(72073045)
关键词
国家中心城市
城市群
城市创新能力
双重差分法
national central city
urban agglomeration
city innovation ability
difference in difference method
