Study on Air Quality and Spatial and Temporal Distribution Characteristics of Air Pollutants in Sichuan Province from 2017 to 2021  

作　　者：Xirui ZHAO Feng HE Xiaohan ZHANG 

机构地区：[1]College of Science,Tibet University,Lhasa 850000,China

出　　处：《Meteorological and Environmental Research》2022年第4期19-24,共6页气象与环境研究（英文版）

基　　金：Supported by Physical and Chemical Characteristics and Source Analysis of Atmospheric Particulate Matter in Lhasa,Tibet(21677116);National Natural Science Foundation of China,National Key Research&Development Program of China(2019YFC1904101)。

摘　　要：Atmosphere is the basic environmental element on which human beings depend for survival and development,and its environmental quality is directly related to sustainable socio-economic development.China is currently in a period of accelerated urbanization,accompanied by industrialization and urbanization bringing environmental pollution problems more and more prominent.Therefore,it is particularly important to strengthen the management of atmospheric quality and improve the level of atmospheric environment.To this end,the spatial and temporal distribution characteristics of AQI and six types of air pollutants in eight prefecture-level cities were analysed and studied using the month-by-month air quality monitoring data of Sichuan Province from 2017 to 2021.The results show that:(1)according to the Ambient Air Quality Standards,Chengdu,Mianyang,Zigong,Luzhou and Deyang do not meet the concentration limits of PM_(2.5),Zigong and Suining do not meet the concentration limits of PM_(10),Chengdu does not meet the concentration limits of NO_(2),and all eight cities meet the concentration limits of NO_(2)and SO_(2).(2)The seasonal concentration changes of PM_(2.5),PM_(10)and NO_(2)have the same characteristics,showing that they are winter>spring>autumn>summer.The seasonal concentration changes of CO are winter>autumn>spring>summer;the seasonal concentration changes of SO_(2)are winter>spring>summer>autumn;the seasonal concentration changes of O_(3)are summer>spring>autumn>winter.

关 键 词：Sichuan Province Air pollutants Concentration characteristics Spatial and temporal distribution 

分 类 号：X51[环境科学与工程—环境工程]