不同集聚结构下的知识溢出与区域创新绩效研究

知识溢出对区域创新绩效的影响已引起人们的广泛关注,文章将知识溢出的不同类型纳入知识生产函数模型中,分析了1993～1995年与2005～2007年生产行为聚集所产生的专业化和多样化环境下的知识溢出以及集聚所产生的竞争与垄断环境下的知识溢出对区域创新绩效的影响。实证结果表明,产业内知识溢出对两个阶段的创新绩效均存在一致、正面的影响,多样化的集聚结构对区域创新绩效的影响在2005～2007年较初期有显著的提高,且弹性系数也由负数变为正数,竞争性市场结构比垄断性市场结构对创新有更显著的影响。

Knowledge Spillover and Regional Innovation Performance Based on Different Agglomeration Structure

Knowledge spillover has effects on the regional innovation performance which has attracted attention extensively.In this paper we take the effects into knowledge production function （KPF） to investigate the impacts of knowledge spillover generated by spatial agglomeration of production activities on innovative output.In other words,MAR spillover,Jacobs spillover and Porter externalities,which one is more important？ The econometric analysis of 1993-1995 and 2005-2007 shows that the specialization spillover presents consistent and positive effect in the two periods,and diversity spillover takes negative effect in the initial period but positive effect in 2005-2007,compared with the monopolistic market structure,competition has a more pronounced impact on the regional innovation performance.