河南城建学院学报2023，Vol.32Issue(6)：96-101,124,7.DOI:10.14140/j.cnki.hncjxb.2023.06.014
河南省PM2.5时空变化及其影响因素
Spatial-temporal variability and influence factors of PM2.5 concentration in Henan Province
摘要
Abstract
PM2.5 is a solid fine particle in the atmosphere that can linger in the air for lengthy periods of time and can affect human health by being easily breathed in.Based on hourly PM2.5 concentration data from 18 sta-tions in Henan Province from January 1,2017 to December 31,2022,the aim of this paper is to explore the spatial-temporal variability and influence factors of PM2.5 concentration through mathematical statistics,inverse distance weights,and geographical detectors methods.The conclusions are as follows:(1)On an interannual scale,the annual average PM2.5 concentration in Henan Province showed a decreasing trend from 2017 to 2022.(2)On the seasonal scale,the average concentration of PM2.5 in four seasons from high to low was winter(89.5±16.2 μg/m3),autumn(48.5±5.5 μg/m3),spring(41.4±6.1 µg/m3),summer(28.8±7.3μg/m3),and the average concentration in winter was considerably higher than that in the remaining three sea-sons.(3)On the monthly scale,PM2.5 concentration showed a U-shaped shift,decreasing from January to July and increasing from August to December,with the highest concentration in January(107.9±12.2 μg/m3)and the lowest concentration in July(27.0±10.6 μg/m3).(4)In terms of spatial scale,the annual average concentration of PM2.5 in northern Henan Province(Anyang,Puyang,Jiaozuo,Jiyuan,Luoyang,Kaifeng)was higher,while the concentration in southern(Xinyang and Zhumadian)was lower,showing a"higher in the north and lower in the south"variation.(5)It is found that annual precipitation,the secondary industry,annu-al average wind speed,and resident population dominate spatial-temporal changes of PM2.5 concentration in Henan Province through geographical detectors method.关键词
PM2.5/时空变化/影响因素/河南省Key words
PM2.5/spatial-temporal variability/influence factors/Henan Province分类
天文与地球科学引用本文复制引用
韩艳,董慧敏..河南省PM2.5时空变化及其影响因素[J].河南城建学院学报,2023,32(6):96-101,124,7.基金项目
国家自然科学基金(41602187) （41602187）
河南省高等学校重点项目(17A170011) （17A170011）
