新疆地区城市环境空气质量特征分析  

Analysis of urban ambient air quality characteristics in Xinjiang

作　　者：杨艳艳 帕丽达·牙合甫 蔡梦玥 朱新萍[1] 邹扬 YANG Yanyan;PALIDA·Yahepu;CAI Mengyue;ZHU Xinping;ZOU Yang(College of Pratacultural and Environmental Science,Xinjiang Agricultural University,Urumqi 830052,China)

机构地区：[1]新疆农业大学资源与环境学院,乌鲁木齐830052

出　　处：《环境保护科学》2023年第5期106-113,共8页Environmental Protection Science

基　　金：国家自然科学基金资助项目(21567028、21966029);自治区高校基本科研业务费科研项目(XJEDU2022P043)。

摘　　要：为探究新疆地区城市的环境空气质量特征,选取2021年新疆地区14个城市6种常规大气污染物的月均浓度和年均浓度,采用综合指数和空气质量指数对其月度变化、季节变化和区域特征进行了分析。结果显示:2021年新疆14个城市PM_(10)、PM_(2.5)、NO_(2)、CO和SO_(2)5种污染物浓度的月度变化均表现为“U”型,最高值出现在冬季12和1月;O_(3)浓度月度变化为倒“U”型,最高值出现在夏季7月(120μg/m3)。2021年新疆地区大气环境主要超标污染物为PM_(10)和PM_(2.5),其年均浓度超标倍数分别为0.78和0.21;重点超标城市为南疆的和田、喀什、阿克苏等市。2021年全疆平均优良天数比例为74.44%,污染天气主要出现在春季和冬季。综合指数表现为南疆(6.56)>东疆(4.85)>北疆(3.28),北疆的环境空气质量最佳。与2020年相比,2021年环境空气质量有所好转。To explore the characteristics of ambient air quality in Xinjiang,the monthly average concentration and annual average concentration of 6 conventional air pollutants in 14 cities in 2021 were selected,and the monthly variation,seasonal variation and regional characteristics were analyzed by a comprehensive index and the air quality index.The results showed that the monthly changes of PM_(10),PM_(2.5),NO_(2),CO and SO_(2)concentrations were all"U"type,with the highest values appearing in December and January.The monthly variation of O_(3)concentration was inverted"U"type,and the highest values appeared in July of summer,with a concentration of 120μg/m3.The main excessive pollutants of atmospheric environment were PM_(10)and PM_(2.5),and the superstandard multiple were 0.78 and 0.21,respectively.The key cities that exceeded the standard were Hotan,Kashgar,Aksu and other cities in South Xinjiang.The average proportion of good days in Xinjiang was 74.44%,and the polluted weather mainly occurred in spring and winter.The comprehensive index showed that South Xinjiang(6.56)>East Xinjiang(4.85)>North Xinjiang(3.28),and the ambient air quality in North Xinjiang was the best.Compared with 2020,the ambient air quality was improved in 2021.

关 键 词：新疆 大气污染物 环境空气质量 综合指数 

分 类 号：X51[环境科学与工程—环境工程]