Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China; Fudan Tyndall Center, Fudan University, Shanghai 200433, China.
Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China; Fudan Tyndall Center, Fudan University, Shanghai 200433, China.
Sci Total Environ. 2022 Nov 15;847:157564. doi: 10.1016/j.scitotenv.2022.157564. Epub 2022 Jul 28.
Large amounts of fossil fuels that are consumed in association with the urbanization process, lead to billions of tons of greenhouse gases and air pollutants. Air pollution control policies have the synergic effects on carbon emissions reduction, but whether they can improve the synergic emission reduction efficiency (SERE) needs to be studied. 279 Chinese cities are selected as research samples. We evaluate the synergic effect of China's "Air Pollution Prevention and Control Action Plan" (APPCAP) from the perspectives of benefits and efficiency with the Difference-in-differences (DID) model. We further decompose the SERE into synergic emission reduction technological efficiency change (SEREEC) and synergic emission reduction technological change (SERETC) to analyze the internal impact mechanisms. The result shows that: (1) SERE has increased by 8 % from 2010 to 2017, for the expansion of the possibility boundary. (2) The APPCAP has co-benefit of carbon emissions reduction by 1.5 %, but inhibits the SERE increase by 1.2 % because of the lack of resource allocation efficiency improvement. (3) The APPCAP has an inhibitory effect on SEREEC and a promoting effect on SERETC. Therefore, the government should emphasize the source control and treatment efficiency, and further strengthen the system innovation for achieving urban sustainable development effectively.
大量与城市化进程相关联的化石燃料消耗导致了数十亿吨温室气体和空气污染物的排放。空气污染控制政策对减少碳排放具有协同效应，但它们是否能提高协同减排效率（SERE）仍需研究。本文选取了 279 个中国城市作为研究样本。采用双重差分模型（DID）从效益和效率两个方面评估了中国“大气污染防治行动计划”（APPCAP）的协同效应。进一步将 SERE 分解为协同减排技术效率变化（SEREEC）和协同减排技术变化（SERETC），以分析内在的影响机制。结果表明：（1）2010 年至 2017 年，SERE 增长了 8%，这得益于可能性边界的扩大。（2）APPCAP 对碳减排具有 1.5%的协同效益，但由于缺乏资源配置效率的提高，抑制了 SERE 的增长，抑制了 1.2%。（3）APPCAP 对 SEREEC 有抑制作用，对 SERETC 有促进作用。因此，政府应强调源头控制和处理效率，并进一步加强系统创新，以有效实现城市的可持续发展。
