Contrastive Analysis Of The Atmospheric Environment Quality Of Four Cities In Xinjiang From 2009 To 2015

Objective:the four major cities in xinjiang,urumqi,karamay,yining,kashi)three major pollutants(SO₂,NO₂ and PM₁₀),mining,non pollution in heating period,emissions of major pollutants and meteorological factors were analyzed,four urban environment quality are discussed.Methods:by collecting four cities in 2009-2015 three pollutants(SO₂,NO₂ and PM₁₀)monitoring data of air environmental quality,the pollutant source emission as well as the meteorological factors,the use of statistical description and spearman correlation analysis to evaluate the pollution characteristics of the four cities.Results:Four city overall atmospheric environmental quality were improved.7 years,the annual concentration S0₂ has greatly reduced,up to the national secondary standard:N0₂ annual average concentration did not exceed national standards,four cities in xinjiang order from light to heavy air pollution in kelamayi>urumqi>yining>kashgar.Four cities heating period of 2009-2015 and the heating period air quality level analysis,you can see four city level of the heating period of air quality is better than that of heating period.Heating period and heating period pollution from heavy to light for kashi>yining>urumqi>karamay.The city of four primary pollutant is PM₁₀.Atmospheric pollutant PM₁₀,S0_2,N0₂ monthly average concentration and monthly average temperature,wind speed and air pressure in o.2005 level have significant correlation.The annual concentration of SO₂ in urumqi,maximum wind speed and wind direction correlation coefficient is 0.785.Kashgar annual concentration of SO₂ and the correlation coefficient is 0.675.Air pressure yining annual NO₂ concentration and maximum wind speed direction correlation coefficient is 0.72.The annual kelamayi NO₂ concentration and maximum wind speed direction correlation coefficient is 0.790.The total coal consumption in the city,the source of industrial consumption proportion is on the rise,industrial source consumption proportion is on the rise,life source in the fall.S0₂ were greater than the atmospheric environmental capacity and soot emissions.Conclusion:1.2009-2015 four overall urban air environmental quality in the best of karamay,second is yining,urumqi,the worst in kashgar.2.The air quality in addition to influenced by artificial factors,also related to meteorological factors,through to strengthen the control of pollutants to improve environmental quality.