呼和浩特市空气质量状况及影响因素分析  

Analysis of air quality in hohhot and its influencing factors

作　　者：何智英 洪志敏[1] HE Zhi-ying;HONG Zhi-min(College of Sciences,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学理学院,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2021年第3期190-198,共9页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家自然科学基金项目(81860605);内蒙古自然科学基金项目(2020MS01005);内蒙古工业大学研究生教育教学改革项目(YJG2017012)。

摘　　要：基于呼和浩特市2014-2019年的空气质量指数(AQI)以及6种大气污染物PM_(2.5)、PM_(10)、SO_(2)、NO_(2)、CO和O_(3)日平均浓度数据,构建线性分位数回归模型,分析各污染物浓度对位于不同水平(τ=0.10,0.25,0.50,0.75,0.90)AQI的影响.结果表明,在各分位点上,PM_(2.5)、PM_(10)、CO和O_(3)对不同水平的AQI均有正向影响,SO_(2)对不同水平的AQI均有负向影响,NO_(2)对不同水平的AQI正负影响有变化.总体来看,单个影响因素对不同水平的AQI的影响存在显著差异.Based on the air quality index(AQI)and the daily average concentration data of 6 atmospheric pollutants PM_(2.5),PM_(10),SO_(2),NO_(2),CO and O_(3) in Hohhot City from 2014 to 2019,a linear quantile regression model was constructed to analyze the influence of pollutant concentrations on the AQI at different levels(τ=10%,τ=25%,τ=50%,τ=75%,τ=90%).The results show that at each level of AQI,PM_(2.5),PM_(10),CO and O_(3) have positive effects and SO_(2) has a negative effect,but NO_(2) has negative and positive effects on different levels of AQI.Overall,there are significant differences among the impacts of different influencing factors on different levels of AQI.

关 键 词：AQI 大气污染物 影响因素 分位数回归 

分 类 号：O212.1[理学—概率论与数理统计]