为检视不同环境规制对技术创新的有效性,本文采用基准回归模型、中介效应模型、门槛效应模型分析了四类环境规制工具与企业绿色技术创新之间的关系,对“波特假说”的中国实践进行了再检验。研究发现,与环境行政处罚、地区环境政策法规相比,排污费征缴、政府节能环保财政支出更有助于推动企业绿色技术创新,反映出不同环境规制工具的选取对绿色技术创新影响的差异性。进一步通过中介效应模型和门槛回归模型分析,排污费征缴和政府节能环保财政支出均可通过提升企业研发投入强度来推动企业绿色技术创新,但是四类环境规制工具的效果随着各自强度提升呈现出差异化特点,排污费征缴、政府节能环保财政支出对企业绿色技术创新的影响由负变正、由不显著变显著,环境行政处罚随着强度提高却更加阻碍企业绿色技术创新,而无论地区环境政策法规的强度如何,其对绿色技术创新的影响均不显著。

In order to examine the effectiveness of different environmental regulations on technological innovation, this paper analyzes the relationship between four types of environmental regulation tools and enterprise green technological innovation by using benchmark regression model, intermediary effect model and threshold effect model. The study found that, compared with environmental administrative punishment and regional environmental policies and regulations, the collection of sewage fee and the government"s energy conservation and environmental protection financial expenditure are more conducive to promoting enterprise green technology innovation, reflecting the differences in the impact of different environmental regulation tools on green technology innovation. Further through the intermediary effect model and threshold regression model analysis, collects pay fees and government expenditure of energy conservation and environmental protection are through ascension enterprise R D strength to push the green technological innovation, but the effect of four types of environmental regulation tools with their respective strength improve present travel characteristics of alienation, collects pay fees, government expenditure of energy conservation and environmental protection from negative impact to the business of green technology innovation is, by not significant change significantly, environmental administrative punishment with the higher strength is more hinder the green technology innovation, and the intensity of environmental policies and regulations in no matter how, their effects on green technology innovation were not significant.

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国家社会科学“基于环境规制的产业空间转移与区域经济协同发展研究”(18BJY090)；山东省社科规划金融专项项目“我国绿色金融指数发展格局及空间异质性研究”(项目编号：18CJRJ01)