Temporal-Spatial Characteristics And Factors Of The Haze Pollution In Henan Province

In recent years,haze pollution has become a nation-wide problem especially in Henan province.The haze pollution has been posing serious threat to many aspects.The pollution detriments people's health and daily life.Haze pollution is growing more and more severe and it is produced by a variety of factors together.Because of the particularity of geographical environment,natural resources and economic level in Henan Province,it is of great significance to analyze the characteristics of temporal and spatial distribution as well as the influencing factors of haze pollution in Henan Province.In this paper,we firstly summarize the geography features,energy structure and economic level of Henan Province.Secondly,the atmospheric pollution monitoring data from 2015 to 2016 in Henan Province are quoted to analyze the haze pollution from two dimensions of time and space.Finally,Based on the research of scholars at home and abroad,20 indicators of urban development were selected from five aspects.Influence factors of air quality index,fine particles and particulate matter were analyzed by gray relational analysis method respectively.Main conclusions of this paper are as follows:(1)In the temporal dimension,the haze pollution in Henan Province has obvious seasonal trend.The concentration of pollutants in winter is higher.The frequency of haze in winter is more than that in summer,and there are daily periodic changes.(2)In the spatial dimension,there are regional distribution characteristics of haze pollution in Henan Province.The most polluted area is the northern part of Henan Province,followed by the central region.Haze pollution present a characteristics that the north is higher than the south,the west is higher than the east.With system cluster analysis,cities of Henan Province is divided into three categories: moderate pollution,light pollution and good quality.(3)The five factors are selected from the perspective of urban development,and the influence factors of haze pollution in Henan Province are studied by gray relational analysis.The study shows that the air quality index and the two main pollutants are affected by exhaust emissions,development of the secondary industry,energy consumption,the growing number of civilian cars and the proportion green area and other factors.