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运用Meta回归分析方法,对CSSCI数据库近10年来34篇有关制造业集聚度测算的研究进行定量综述,寻找导致制造业集聚度测算不同研究结果的原因。研究发现:(1)在研究对象上,研究的行业越具体,显示的集聚水平越低,而研究区地理单元大小与集聚值测算结果呈反向关系,这可能意味着制造业集聚形成的规模效应可能并没有想象中的大;(2)在时间维度上,制造业集聚度呈现出先下降后上升的U型趋势;(3)在测算方法上,EG指数是一种较为中性的方法。建议未来研究对行业异质性给予更多关注,将研究对象由宽泛的“制造业”进一步细分测算集聚度,并结合具体的行业特征提出升级策略。
Meta regression analysis method is used to quantitatively summarize 34 CSCI research reports about the calculation of manufacturing concentration in the past 10 years and find out the reasons that lead to the different results of manufacturing concentration measurement. The findings are as follows: (1) The more specific the research industry, the lower the level of agglomeration, and the inverse relationship between the geographical unit size and the agglomeration value in the study area, which may imply the formation of agglomeration of manufacturing industry (2) In the time dimension, the manufacturing concentration shows a U-shaped trend of first rising and then decreasing; (3) The EG index is a more neutral method in the measurement method. It is suggested that future research should pay more attention to the heterogeneity of the industry, further divide the research object from the broad “manufacturing ” to measure the degree of agglomeration, and put forward the upgrade strategy according to the specific industry characteristics.