反事实思维
空气污染
环境科学
中国
污染
污染物
差异中的差异
自然实验
空气污染物
工作(物理)
控制(管理)
气象学
环境规划
环境保护
地理
计量经济学
数学
计算机科学
工程类
统计
心理学
考古
生态学
化学
有机化学
机械工程
人工智能
生物
社会心理学
作者
Haimeng Liu,Chengxin Wang,Mi Zhang,Shaobin Wang
标识
DOI:10.1016/j.scitotenv.2022.157333
摘要
Air pollution has caused wide concern in China, and many governance policies and plans have been implemented in recent years. Based on counterfactual quasi-natural experiments, we analyzed the implementation effects of autumn and winter air pollution control policies in the Jing-Jin-Ji region and surrounding areas using a difference-in-differences (DID) model. The control group was selected based on geographical and meteorological factors, and we analyzed the impact of the policies on six pollutants. The results show that the policies reduced air pollution overall, but not every pollutant. Due to the policy contribution, the concentrations of PM2.5 and PM10 in autumn and winter from 2017 to 2018 decreased by 6.9 % and 8.5 %, respectively. The numerical value of PM2.5, PM10, CO, and AQI in 2018-2019 decreased by 18.2 %, 7.2 %, 13.9 %, and 8.8 %, respectively. The role in the reduction of O3, SO2, and NO2 was not obvious. This work provides a research paradigm for evaluating the effects of atmospheric environment policy which can be applied to other studies and provide references for formulating additional policies.
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