IMPACT OF POLYCENTRIC SPATIAL STRUCTURE ON THE INNOVATION PERFORMANCE OF CHINESE CITIES:EVIDENCE FROM 279 CITIES AT OR ABOVE THE PREFECTURE LEVEL
This paper builds a panel dataset composed of 279 cities at or above the prefecture level from 2001 to 2016,and uses panel two-way fixed effects model to explore the impact of polycentric spatial structure on the innovation performance of Chinese cities.The polycentricity degree of urban spatial structure is obtained by identifying the LandScan dataset and comprehensively considering the population,distance,and area of each center,and the urban innovation performance is characterized by the number of patent applications per 10,000 people in the city.The research results show that the polycentric spatial structure has a significant positive impact on urban innovation performance,and it is only valid for economically well-developed cities.The results also indicate that,during the sample period,the increase of investment in science and education,population agglomeration,economic development,and improvement of public services can promote urban innovation performance,while the investment-driven urban construction has a certain restrictive effect on urban innovation performance.The paper provides support for the feasibility of polycentric spatial structure in urban planning practice,and also puts forward corresponding policy implications.