制造业服务化对区域绿色创新效率的影响

基于2006年—2019年中国省级的面板数据，利用空间计量模型、中介效应模型等方法实证分析了制造业服务化对区域绿色创新效率的影响效应及中介机制.研究发现：1) 绿色创新效率存在显著的空间集聚特征和空间溢出效应.全国层面，制造业服务化对绿色创新效率的影响呈显著的“N”型曲线，在考虑内生性和稳健性后，该结论依旧成立.2) 制造业服务化对绿色创新效率的影响存在显著的区域异质性和行业异质性.相比于非长江经济带，长江经济带制造业服务化对绿色创新效率的影响更为显著；资本密集型制造业服务化和技术密集型制造业服务化对区域绿色创新效率的影响呈“N”型，劳动密集型制造业服务化对区域绿色创新效率的影响不显著.3) 中介效应分析表明，企业成长和创新集聚是制造业服务化影响区域绿色创新效率的中介机制.最后根据结论提出简要政策建议.

Influence of manufacturing servitization on the regional green innovation efficiency

In this paper， spatial Dubin model， mediating effect model and other methods are used to empirically analyze the influence and the mechanism of manufacturing servitization on regional green innovation efficiency based on panel data of provinces in China from 2006 to 2019. It's found that the regional green innovation efficiency has significant spatial agglomeration characteristics and spatial spillover effects. At the national level， there is a significant “N”-shaped relationship between the manufacturing servitization and the green innovation efficiency. This conclusion is still valid after considering the endogenity and robustness.There is significant regional heterogeneity and industry heterogeneity in the impact of manufacturing servitization on the green innovation efficiency. Compared with the other region， the manufacturing servitization in the Yangtze River Economic Belt has a more significant impact on the green innovation efficiency.The servitization of capital-intensive manufacturing and the servitization of technology-intensive manufacturing have an “N”-shaped impact on the regional green innovation efficiency. The servitization of labor-intensive manufacturing has an insignificant impact on the regional green innovation efficiency. The analysis of the intermediary effect suggests that firm growth and the innovation agglomeration are the intermediary mechanism through which the servitization of the manufacturing industry affects the efficiency of regional green innovation. Brief policy recommendations are put forward based on the conclusions.