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基于价值链视角,运用超效率DEA模型测度2005—2014年中国30个省市工业企业绿色创新的整体及分阶段效率,并采用空间面板模型检验其空间溢出效应。结果表明:企业绿色创新的整体及分阶段效率均不高,区域差异明显;在地理距离权重矩阵下,整体及分阶段效率存在显著的正向溢出效应,而基于社会经济距离的外溢效应并不显著,且科技研发阶段的外溢效应强于成果转化阶段;开放度和产业结构与分阶段效率正相关,知识产权保护对本地区和邻区的科技研发分别产生了负向和正向效应。
Based on the perspective of value chain, the super efficiency DEA model was used to measure the overall and phased efficiencies of green innovation in industrial enterprises in 30 provinces in China from 2005 to 2014. Spatial panel model was used to test the spatial spillover effect. The results show that the corporate green innovation has low overall efficiency and phased efficiency and obvious regional differences. Under the geographical distance weight matrix, there is a significant positive spillover effect on overall and phased efficiency, while the spillover effect based on socio-economic distance does not Significantly, the spillover effect of R & D stage is stronger than that of achievement transformation stage. The degree of openness and industrial structure are positively correlated with stage efficiency. The protection of intellectual property rights has negative and positive effects on R & D of the region and its neighboring areas respectively.