创新空间扩散、集聚租金与经济高质量发展  

Innovation Spatial Diffusion,Agglomeration Rent and the High-quality Economic Development

作　　者：王兵 吴福象[1,2] WANG Bing;WU Fuxiang(School of Economics,Nanjing University,Nanjing 210093,China;Yangtze River Delta Economics and Social Development Research Center, Nanjing University, Nanjing 210093, China)

机构地区：[1]南京大学经济学院,江苏南京210093 [2]南京大学长江三角洲经济社会发展研究中心,江苏南京210093

出　　处：《审计与经济研究》2021年第4期117-127,共11页Journal of Audit & Economics

基　　金：国家社会科学基金重大项目(20&ZD123);国家自然科学基金面上项目(72073061);国家社会科学基金青年项目(20CJL034);2019年度南京大学博士研究生创新创意研究计划项目(CXCY19-20)。

摘　　要：基于新经济地理学和内生增长理论,构建了一个贸易自由度约束下的局域溢出模型,探究了创新的空间扩散与集聚影响经济高质量发展的作用机制。研究发现:对称均衡是模型的唯一内点均衡;当角点均衡时,存在唯一的贸易自由度支撑区间,此时,如果运输成本变小,则技能劳动力、R&D部门、制造业部门以及创新活动将变得更集聚,同时创新的空间扩散程度变大,外围区域在研发创新方面的劣势减弱;从增长和福利评价的角度看,在技能劳动力存量不变的条件下,创新的空间扩散对整个经济体的经济增长并没有影响,然而,当区域的经济增长源于可流动的技能劳动力集聚时,中心区域的技能劳动力和普通劳动力总是偏好集聚状态,当且仅当创新的空间扩散效应足够大或者集聚租金较小时,外围区域的普通劳动力偏好集聚状态。因此,降低运输成本,提高贸易自由度,有助于增大创新空间扩散效应,减小集聚租金,提高全域劳动力福利水平,从而促进经济的高质量发展。Based on the theory of new economic geography and endogenous growth,this paper constructs a local spillovers model under the restriction of trade freedom,and explores the mechanism of innovation spatial diffusion and agglomeration on the influence of high-quality economic development.The study shows that symmetric equilibrium is the only interior point equilibrium of the model.And there is a unique support zone of trade freedom in the case of corner equilibrium.In this case,the smaller the transportation cost is,the more concentrated the skilled labor force,R&D department,manufacturing sector and innovation activities tend to be.Meanwhile,the degree of spatial diffusion of innovation increases,and the disadvantage of peripheral regions in R&D and innovation are weakened.From the perspective of growth and welfare evaluation,the spatial diffusion of innovation has no effect on the economic growth of the entire economy under the constant stock of skilled labor.However,when the regional economic growth originates from the agglomeration of mobile skilled labor,the skilled labor and ordinary labor in the central area always prefer the agglomeration state.If and only if the effect of innovation spatial diffusion is large or the agglomeration rent is small,the ordinary labor in the periphery will also prefer the agglomeration state.Therefore,reducing transportation costs and increasing the degree of trade integration are conducive to enhancing the diffusion effect of innovation space,reducing agglomeration rents,improving the welfare level of the whole labor force,and thus promoting high-quality economic development.

关 键 词：创新空间扩散 集聚租金 高质量发展 局域溢出模型 福利评价 区域经济发展 空间经济发展 

分 类 号：F129.9[经济管理—世界经济] F207