COVID-19封锁对特比利斯空气污染的影响
Tamari Kashibadze1, Nino Kiladze2, Ekaterine Ruadze3
1Tbilisi State Medical University, Tbilisi, Georgia. tkashibadze@gmail.com.
Environmental monitoring and assessment
|December 3, 2025
概括
由于COVID-19的封锁,格鲁吉亚特比利斯的城市空气污染暂时减少. 然而,污染水平在2021年反弹,超过世界卫生组织的指导方针更频繁,突出政策需求.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 大气化学 大气化学
背景情况:
- 由于COVID-19大流行,封锁导致流动性减少,城市空气质量发生了变化.
- 之前的研究表明,这些限制对全球污染水平的影响是可变的.
- 在封锁期间和之后评估空气质量变化对于了解环境政策的有效性至关重要.
研究的目的:
- 评估COVID-19封锁行动限制对特比利斯城市空气污染 (PM2.5和PM10) 的影响.
- 将2020年封锁期间的污染水平与封锁前 (2019) 和封锁后 (2021) 期间进行比较.
- 评估遵守世界卫生组织 (WHO) 空气质量指南和格鲁吉亚国家标准.
主要方法:
- 在2019年,2020年和2021年3月至5月的63天期间,对PM2.5和PM10的每日平均度进行分析.
- 统计分析包括描述性统计,ANOVA和对对后 hoc测试以确定重大变化.
- 对世卫组织指南和格鲁吉亚国家标准的超标率的计算.
主要成果:
- 与2019年相比,在2020年封锁期间,每天的PM2.5和PM10度的平均值略有下降.
- 污染水平在2021年显著增加,PM2.5从11.7μg/m3上升到14.6μg/m3,PM10从23.2μg/m3上升到32.3μg/m3.
- 超过世卫组织指南的日数比例在2020年最低,但在2021年增加;超过格鲁吉亚标准的情况仍然很小.
结论:
- 由于COVID-19的封锁,特比利斯的PM2.5和PM10暂时减少.
- 2021年污染水平的增加和世卫组织指导方针的超越率的增加表明需要重新评估政策.
- 格鲁吉亚国家标准的最小超越强调了修订空气质量门和加强长期政策的必要性.
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