近3 a内蒙古地区臭氧浓度时空变化及其影响因素  

Spatiotemporal Variation of Ozone Concentration and Its Influential Factors in Inner Mongolia in Recent 3 Years

作　　者：陈志青 邵天杰 赵景波 CHEN Zhi-qing;SHAO Tian-jie;ZHAO Jing-bo(School of Geography and Tourism,Shaanxi Normal University,Xi 'an 710119,Shaanxi,China;Key Laboratory of Aerosol Chemistry and Physics,Institute of Earth Environment,Chinese Academy ofSciences ,Xi'an 710061,Shaanxi,China)

机构地区：[1]陕西师范大学地理科学与旅游学院,陕西西安710119 [2]中国科学院地球环境研究所气溶胶化学与物理重点实验室,陕西西安710061

出　　处：《干旱区研究》2019年第4期990-996,共7页Arid Zone Research

基　　金：国家自然科学基金国际合作重大项目(41210002);中国科学院气溶胶化学与物理重点实验室项目(KLACP-2018-01)

摘　　要：为科学认识内蒙古地区臭氧(O3)污染特征及其影响因素,对内蒙古地区12个盟市2015-2017年国控环境监测站点和国家气象台站数据进行了分析。结果表明:2017年较2015年O3浓度和污染形势整体上呈加重趋势,5-8月O3浓度最高,污染最为严重,且在7月达到O3浓度峰值。空间变化上,内蒙古中西部地区O3污染浓度较高,东部地区O3污染浓度较低,与内蒙古的经济发展水平表现出一定的同步性。颗粒物、前体物和气象因素等都是影响O3浓度的重要因子,其中,PM2. 5、CO、NO2均与O3浓度呈显著负相关,O3浓度随相对湿度的升高逐渐下降。In order to study the O3 pollution in Inner Mongolia and its influential factors,the data from the national environmental monitoring stations and national meteorological stations in 12 cities in Inner Mongolia from 2015 to 2017 were analyzed. The overall O3 pollution in 2017 was aggravated compared with that in 2015 and the O3 concentration was the highest and the most serious during the period from May to August,especially in July. Spatially,the O3 pollution was relatively more serious in the central and western parts of Inner Mongolia,while lower in the east parts which was synchronous with the economic development level. Particles,precursors and meteorological factors were the important factors affecting O3 concentration. There were the significantly negative correlations between the O3 concentration and the PM2. 5,CO and NO2,and the O3 concentration decreased gradually with the increase of relative humidity.

关 键 词：臭氧浓度 颗粒物 时空变化 相对湿度 内蒙古 

分 类 号：X515[环境科学与工程—环境工程]