西北五省(区)空气污染时空变化特征及其影响因素  

Temporal and spatial variation characteristics of air pollution and their influencing factors in Northwest China

作　　者：魏旖梦 孜比布拉·司马义[1,2,3] 杨胜天[1,2,3,4] 张芸菲 田甜 毛红云 WEI Yi-meng;Zibibula·Simayi;YANG Sheng-tian;ZHANG Yun-fei;TIAN Tian;MAO Hong-yun(College of Resource and Environment Sciences,Xinjiang University,Urumqi 830046,Xinjiang,China;Key Laboratory of Xinjiang University Intellectualizing City and Environment Modeling Department of Education,Urumqi 830046,Xinjiang,China;Key Laboratory of Oasis Ecology Ministry of Education,Urumqi 830046,Xinjiang,China;School of Geography and Remote Sensing,Beijing Normal University,Beijing 100875,China)

机构地区：[1]新疆大学资源与环境科学学院,新疆乌鲁木齐830046 [2]新疆大学资源与环境科学学院,智慧城市与环境建模普通高校重点实验室,新疆乌鲁木齐830046 [3]新疆大学绿洲生态教育部重点实验室,新疆乌鲁木齐830046 [4]北京师范大学地理学与遥感科学学院,北京100875

出　　处：《云南大学学报（自然科学版）》2021年第3期513-523,共11页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金−新疆联合基金重点项目(U1603241).

摘　　要：为探究西北5省(区)的区域环境空气质量状况,利用统计分析法、克里金插值法和地理加权回归模型等方法,对2015—2018年西北5省(区)的161个监测站点的空气质量实时监测数据进行分析,揭示这4年西北5省(区)空气污染时空变化特征及其影响因素.结果表明:(1)2015—2018年西北5省(区)整体空气质量逐渐改善,其中,2017年污染超标城市数量最多,轻度污染天数最多的是甘肃省,重度及严重污染天数最多的是新疆;(2)2015—2018年AQI污染高值区均在新疆,且6项污染物质量浓度污染高值区域各不一样;(3)地理加权回归模型表明,自然和社会经济因素对AQI分布均有显著影响,但不同地区的影响因素存在差别,其中,风速、气温、相对湿度、绿化覆盖率、第二产业比重和总人口等自然和社会经济因素对西北5省(区)AQI指数影响最显著.In order to explore the regional environmental air quality in Northwest China,statistical analysis,Kriging interpolation,spatial autocorrelation,and geographic weighted regression models were used to analyze the161 monitoring stations in Northwest China from 2015 to 2018.The analysis of real-time air quality monitoring data revealed the characteristics and influencing factors of air pollution in Northwest China during the four years.The results showed that:(1)From 2015 to 2018,the overall air quality of the five northwestern Provinces(regions)has gradually improved.Among them,the number of cities with excessive pollution in 2017 was the largest,Gansu Province had the largest number of lightly polluted days,and Xinjiang had the largest number of severely and severely polluted days.(2)The areas with high AQI pollution values from 2015 to 2018 were all in Xinjiang,and the six high-value areas of pollutant concentration were different.(3)Geographically weighted regression model showed that natural and socioeconomic factors had a significant impact on the distribution of AQI,but in different places there were different influencing factors among which wind speed,temperature,relative humidity,green coverage,proportion of secondary industry,total population,and other natural and socioeconomic factors had the most significant impact on the AQI index in Northwest China.

关 键 词：空气质量 时空变化 西北五省(区) 空气污染 

分 类 号：X51[环境科学与工程—环境工程]