Business School, Ningbo University, Ningbo 315211, China.
Marine Economics Research Center, Donghai Academy, Ningbo University, Ningbo 315211, China.
Int J Environ Res Public Health. 2022 Oct 10;19(19):12957. doi: 10.3390/ijerph191912957.
With the increasingly serious environmental problems, coordinating the relationship between the environment and economic development has become a crucial task for developing countries, especially China. This paper studies the role of eco-industrial parks (EIPs) in the emissions of carbon dioxide and sulfur dioxide in China with the difference-in-difference (DID) approach by focusing on the entire process of EIPs' establishment-upgrading provincial development zones (DZs) to national DZs and then transforming national DZs into EIPs. Besides, we examined the heterogeneous effect of the different transformations from national economic and technological development zones (ETZs) or national high-tech zones (HTZs) to EIPs. In addition, we studied the spatial spillover effects of EIPs and their paths with the spatial difference-in-difference (SDID) method. The results show that neither provincial DZs nor national DZs can significantly reduce sulfur dioxide and carbon dioxide emissions. Only when national DZs are transformed into EIPs can they be reduced significantly. However, the different transformations from the HTZs and ETZs to EIPs have different effects on emissions. Moreover, EIPs have technology spillovers and demonstration effects on surrounding areas. Therefore, EIPs can reduce emissions in the surrounding areas. The results indicate that, in order to achieve high-quality development and coordinate the relationship between environment and economic development, we should take positive steps to promote the transformation of DZs into EIPs.
随着环境问题日益严重，协调环境与经济发展之间的关系已成为发展中国家（尤其是中国）的一项关键任务。本文通过关注生态工业园区（EIP）建立-升级省级经济技术开发区（DZ）为国家级开发区（DZ），再到国家级开发区（DZ）转变为 EIP 的全过程，采用双重差分（DID）方法，研究了 EIP 在我国二氧化碳和二氧化硫排放中的作用。此外，我们还检验了从国家级经济技术开发区（ETZ）或国家级高新技术开发区（HTZ）转变为 EIP 的不同转型的异质效应。此外，我们还采用空间双重差分（SDID）方法研究了 EIP 的空间溢出效应及其路径。结果表明，省级开发区和国家级开发区都不能显著减少二氧化硫和二氧化碳的排放。只有当国家级开发区转变为 EIP 时，才能显著减少排放。然而，从 HTZ 和 ETZ 到 EIP 的不同转型对排放有不同的影响。此外，EIP 对周边地区具有技术溢出和示范效应。因此，EIP 可以减少周边地区的排放。研究结果表明，为了实现高质量发展和协调环境与经济发展之间的关系，我们应该采取积极措施，推动开发区向 EIP 的转型。
