从污染溢出的视角,解释了地区间污染减排的策略性行为,推导了污染溢出的空间Tobit设定。然后,利用中国31个省级环境专利数据,在控制技术溢出的情况下,分离出污染减排对环境技术创新的溢出效应。估计结果显示,污染减排对环境技术创新不仅有显著的正的直接作用,而且还存在不显著的负溢出效应,综合这两方面的影响使污染减排具有不显著的正影响,表明忽略污染溢出有可能夸大污染减排在技术创新中的作用。进而探讨相应的政策意义。
Abstract
From the perspective of pollution spillover, the paper interprets simply the across-regional strategic behaviors on cross-regional pollution abatement, and derives the spatial Tobit specification with pollution spillover. Moreover, in controlling the externality of technology, we isolate the impacts of pollution abatement on environmental technology innovation using the data of Chinese 31 provincial environmental patents. The results show that there is not only a significant positive direct effect of pollution abatement on environmental technology innovation, but also a non-significantly negative spillover effects. Combining these two effects makes it to be a non-significantly positive effect, which indicates that ignoring pollution spillover may overstate the role of pollution abatement in technology innovation.
关键词
污染溢出 /
环境技术创新 /
污染减排 /
空间Tobit模型
Key words
pollution spillover /
environmental technology innovation /
pollution abatement /
Spatial Tobit Model
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