The Spatial Distribution Characteristics And Influencing Factors Of PM_2.5 In Hangzhou Area

With the rapid economic development in our country,the environmental problems are becoming increasingly serious.Haze has become an important environmental issue that affects many large and medium-sized cities in our country.The culprit of haze is PM_2.5,at present,PM_2.5 has also become an important pollutant in Hangzhou.In this paper,the spatial distribution of PM_2.5 in Hangzhou area and its influencing factors were studied.Spatiotemporal characteristics can reflect pollutants The distribution of the temporal and spatial aspects.This paper argues that for the study of temporal and spatial distribution of pollutants,research in this area is of great help in understanding and understanding the overall level and level of pollution in urban areas,and in conducting further scientific measures on how to control pollution,To guide people's production and life is of great significance.This article first expounds the background and significance of this research,discusses the research status at home and abroad,and proposes the technical route of this article.Secondly,it elaborates the spatial distribution characteristics of PM_2.5 in Hangzhou area,and finally studies the influencing factors of PM_2.5 in Hangzhou area and summarizes and prospects the full text.The main conclusions of this paper include:?1?During the observation period in 2016,PM_2.5 in Hangzhou was the most polluted,followed by PM₁₀0 and O₃.However,NO₂,PM_2.5,PM₁₀0 daily average concentration exceeds the standard rate of close to.Nitrogen dioxide,PM_2.5.5 and PM₁₀,were the highest in 2015 and dropped in 2016 compared with 2014.?2?Except for CO,the overall pollutant concentration in Hangzhou shows that it is high in the east and low in the west.The pollution of PM_2.5and PM₁₀ is mainly concentrated in the entire eastern region.This shows that the more developed the economy is,the higher the level of industrialization is.The greater the traffic emissions are,the more serious the pollution of PM_2.5.?3?The effect of meteorological factors on PM_2.5 concentration in Hangzhou is obvious.The most influential chemical factors of PM_2.5 in Hangzhou are NO and SO₂.This paper established the regression model of PM_2.5 and vegetation coverage,which shows that the variation of PM_2.5 concentration and vegetation coverage have a relatively strong correlation.It is hoped that the research discourse in this article can provide reference for the control of PM_2.5 pollution in Hangzhou.