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《Forum on Science and Technology in China》 2018-10
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Economic Agglomeration,Spatial Structure and Urban Innovation——An Empirical Study Based on Data of 233 Cities at the Prefecture Level and Above in China

Ni Jinfeng;Li Hua;School of Economics,Lanzhou University;Accounting Institute,Tongling University;  
Using the corrected DMSP/OLS data,this paper empirically examines the chain reaction of economic agglomeration,spatial structure and technological innovation in the urban dimension.The results show that there is an U-shaped relationship between economic agglomeration and technological innovation,but generally,the marginal innovation output of agglomeration is increasing.There is an inverted U-shaped relationship between Space Herfindahl-Hirschman Index and technological innovation.The Herfindahl-Hirschman Index of the optimal spatial structure is about 0.423;The interaction effect between economic agglomeration and spatial structure is negative,and the " crowding-in effect " of restraining innovation appears in a single-center structured city with a high degree ofagglomeration.However,the less agglomerated polycentric city is not conducive to innovation.Therefore,the policy meaning is obvious:in order to make use of the incremental innovation effect of agglomeration,we should not overemphasize the "urban disease"to control the scale of the big cities;we should pay attention to the reasonable match between urban economic agglomeration and the spatial structure,guide the small and medium-sized cities to take the compact space development mode as well as moderately promote the Suburban development of big cities.
【Fund】: 中央高校基本科研业务费专项资金项目“共建‘丝路经济带’背景下我国西北地区金融合作机制研究”(15LZUJBWYJ014);; 国家社会科学基金一般项目“创新驱动发展战略下成本动因拓展与集成系统研究”(14BGL004)
【CateGory Index】: F124;F299.2
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