制造业集聚、空间知识溢出与城市创新绩效——来自中国283个城市的证据

Manufacturing Agglomeration,Spatial Knowledge Spillover and Urban Innovation Performance—Evidence From 283 Cities in China

制造业是技术创新的重要载体,也是创新驱动发展的主力军。文章基于2009—2019年中国283个地级及以上城市的面板数据,采用空间杜宾模型实证检验了制造业集聚、空间知识溢出对城市创新绩效的影响。研究发现:制造业集聚与城市创新绩效存在先抑制、后促进的“U”型曲线关系;分区域来看,制造业集聚对创新型城市创新绩效存在非线性的促进作用,与非创新型城市创新绩效存在先促进、后抑制的“倒U”型曲线关系;无论是创新型城市还是非创新型城市,制造业集聚对城市创新绩效都存在显著的空间知识溢出效应,即制造业集聚不仅会对本地区城市创新绩效产生影响,而且会通过知识空间溢出影响周围其他城市创新绩效。

As an important carrier of technological innovation,manufacturing industry is the main force of innovation-driv⁃en development.Based on the panel data of 283 cities at prefecture level and above in China from 2009 to 2019,this paper uses the spatial Durbin model to empirically examine the effects of manufacturing agglomeration and spatial knowledge spillover on ur⁃ban innovation performance.The conclusions are as follows:Manufacturing agglomeration has a U-shaped curve relationship that first inhibits and then promotes urban innovation performance.In terms of regions,manufacturing agglomeration has a nonlinear promoting effect on the innovation performance of innovation-oriented cities,and there is an inverted U-shaped curve relation⁃ship of first promoting and then inhibiting the innovation performance of non-innovation-oriented cities.Either in innova⁃tion-oriented cities or in non-innovation-oriented ones,manufacturing agglomeration has a significant knowledge spillover effect on urban innovation performance,that is,manufacturing agglomeration will not only affect the innovation performance of local cit⁃ies,but also affect the innovation performance of surrounding cities through knowledge spatial spillover.