摘要
2016年确定的中央环保督察旨在对环境执法监督形式进行创新性改革,是中国推进生态文明建设的重大制度安排,空气质量被生态环境部纳入督察工作的重点内容。采集全国256个地级及以上城市的面板数据,利用中央环保督察这一准自然实验,使用多期双重差分法评估其对空气质量的改善效果。结果表明:中央环保督察对空气质量指数的降低发挥了显著作用,被督察省份的空气质量指数(AQI)平均下降3.184个单位;单项污染物治理效果表明,中央环保督察对PM_(10)、SO_(2)、O_(3)浓度的降低有显著贡献,但对PM_(2.5)、NO_(2)和CO浓度的影响不显著;进一步地,运用平行趋势检验、反事实检验与倾向得分匹配检验证明回归结果的可靠性;动态效应分析发现,中央环保督察的政策效果具有滞后性,并且随着反馈意见的颁布减弱;机制检验与异质性分析结果表明,中央环保督察政策效果呈现东部、西部、中部地区逐渐减弱的现象,且中央环保督察对空气质量的影响机制中存在技术创新效应。
The central environmental protection inspection determined in 2016 aims to carry out innovative reforms in the form of environmental law enforcement and supervision. It is a major institutional arrangement for China to promote the construction of ecological civilization. Air quality has been included as a key content of the inspection work by the Ministry of Ecology and Environment. Panel data from 256 prefecture-level and above cities across the country are collected,the quasi-natural experiment of the Central Environmental Protection Inspectorate is used,and the multi-period double difference method is used to evaluate the improvement effect on air quality. The results show that the central environmental protection inspection has played a significant role in reducing the air quality index,and the AQI of the inspected provinces has dropped by 3. 184 units on average. The individual pollutant control effect shows that the central environmental protection inspection has made a significant contribution to the reduction of PM_(10),SO_(2),and O_(3)concentrations,But the impact on PM_(2.5),NO_(2)and CO concentration is not significant. Further,parallel trend test,counterfactual test and propensity score matching test are used to prove the reliability of the regression results. Dynamic effect analysis found that the policy effect of the central environmental protection inspection. It is lagging and weakened with the issuance of feedback.The results of mechanism inspection and heterogeneity analysis show that the effect of the central environmental protection inspection policy is gradually weakening in the eastern,western,and central regions,and the central environmental protection inspection’s influence mechanism on air quality. There is a technological innovation effect.
作者
张彦博
李想
Zhang Yanbo;Li Xiang(Sehool of Business Administration,Northeastern University,Shenyang 110169,China)
出处
《技术经济》
CSSCI
北大核心
2021年第11期112-121,共10页
Journal of Technology Economics
基金
辽宁省教育厅人文社会科学项目“有限理性与不完全信息下企业环境技术创新的政策激励与效应研究”(W2015146)。
关键词
中央环保督察
空气质量
执法监督
多期双重差分法
central environmental protection inspection
air quality
law enforcement supervision
difference-in-difference
