doi:10.16186/j.cnki.1673-9787.2020.5.7

Received:2019/12/29

Revised:2020/03/28

Published:2020/09/15

Study on the relationship between characteristics of air pollutants composition and its spatial correlation in Henan Province， China

QIN Jianhui1, WANG Suxian2

1.School of Economics and Management， Henan Polytechnic University，Jiaozuo  454000 ， Henan，China;2.Education Center，Henan Polytechnic University，Jiaozuo  454000，Henan， China

Abstract:Based on daily AQI and major pollutants data in 18 cities in Henan Province between March 2015 and February 2016， the characteristics of primary air pollutants composition and its change process were investigated on yearly and seasonal scale， and the spatial correlation model was clarified by cluster analysis and spatial autocorrelation method. The results showed that PM_2.5 was the most common primary pollutant in Henan Province from 2015 to 2016， but the numbers of its occurence days decreased， and the occurrence days of O₃ increased greatly. Composition of air pollutants varied extremely in different seasons. The number of occurrence days of PM_2.5 as the major pollutant increased and the types of air primary pollutants decreased in winter，while the occurrence days of O₃ as the major pollutant in spring，summer and autumn increased，especially in summer and autumn. The number of days of air pollution and the main pollutants in Henan Province showed a certain agglomeration characteristics in space， and the agglomeration areas varied significantly with time. Under the influence of social economy and natural conditions，the urban primary air pollutants in Henan Province could be divided into five categories.These findings could provide useful references for making scientific and efficient joint prevention and control strategies and classified governance decision.

Key words:air pollution;major pollutant;composition characteristic;spatial correlation;Henan Province

河南省空气污染物构成特征与空间关联关系研究_秦建辉.pdf