2019—2021年疫情前后唐山市大气污染物变化特征及成因分析

马东玲, 任永强, 陈星彤, 孔金哥

Analysis of the variations and causes of air pollutants in Tangshan City before and after the COVID-19 pandemic from 2019 to 2021

MA Dongling, REN Yongqiang, CHEN Xingtong, KONG Jinge

表1 防控初期唐山市本地排放及人为减排估算值

Tab.1 Estimated value of local emission and man-made emission reduction in Tangshan at the initial stage of prevention and control

指标	PM_2.5	PM₁₀	SO₂	NO₂	O₃	CO
本地排放值/(μg·m^-3)	79.4	111.3	23.1	41.2	53.04	1.924
人为减排估算值/(μg·m^-3)	15.72	34.06	5.3	23.4	-22.76	0.132
同比前期变化/%	-16.5	-23.4	-18.7	-36.2	42.9	-6.8