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城市的专业化、多样性特征与技术创新能力之间存在着关联性,由于缺少城市层面创新产出的公开数据,国内学者对这一问题的实证分析较为缺乏。本文通过多种渠道收集到全国195个地级以上城市的专利授权量数据,测算了城市相对专业化指数和相对多样性指数,并利用2006-2008年的面板数据开展计量分析,发现城市产业的多样性有利于技术创新能力提升,而过于专业化则对技术创新不利,城市经济发展水平越高、城市规模越大,其技术创新能力越强。结论对于城市的可持续发展和创新能力提升具有启示意义。
There is a correlation between urban specialization, diversity characteristics and technological innovation capability. Due to the lack of public data on innovation output at city level, there is a lack of empirical analysis on this issue by domestic scholars. This paper collects the data of patent grants in 195 cities above prefecture level through multiple channels, calculates the city’s relative specialization index and relative diversity index, and uses the panel data from 2006 to 2008 to conduct the econometric analysis. It finds that urban industries Diversity is conducive to the upgrading of technological innovation, and over-specialization is not conducive to technological innovation, the higher the level of urban economic development, the greater the size of the city, the stronger its technological innovation. The conclusion is of enlightenment to the city’s sustainable development and innovation ability improvement.