Nonlinear Effects of Eco-Industrial Parks on Sulfur Dioxide and Carbon Dioxide Emissions—Estimation Based on Nonlinear DID

Author:

Xu Qunfang1,Cao Kairui1,Dai Jiaying1,Zhu Yuanyuan2,Dai Yue3

Affiliation:

1. Business School, Ningbo University, Ningbo 315211, China

2. Faculty of Foreign Languages, Ningbo University, Ningbo 315211, China

3. College of Education Science, Guiyang University, Guiyang 550081, China

Abstract

Eco-industrial parks (EIPs) promote the coordination of economic development and environmental protection. This paper uses the nonlinear DID method, with the data of 288 cities spanning from 2003–2019, to study the nonlinear effects of EIPs on SO2 and CO2 emissions, aiming to portray the nonlinear and heterogeneous characteristics of EIP’s effects. Meanwhile, this paper examines the effects of EIPs more accurately and completely. The main results are as follows: 1. EIPs can significantly reduce CO2 and SO2 emissions, but there is significant heterogeneity between the effects. 2. The effect of EIPs on SO2 and CO2 emissions is nonlinear. In addition, it shows significant nonlinear characteristics as the change of foreign investment and population density in cities. Therefore, it is important to consider these nonlinear characteristics when establishing and evaluating EIPs. This paper accurately identifies the nonlinear effects of EIPs and provides some suggestions for the future development of EIPs.

Funder

National Social Science Fund of China

Publisher

MDPI AG

Subject

Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction

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