Spatial And Temporal Distribution Of Air Quality And Its Influencing Factors In Chongqing

The concentration of PM10,NO2,SO2 and Air Pollution Index and Aggregative Pollution Index are important indexes to measure air quality. Air quality has great influence on human health. Therefore, exploring the influence factors and the changing laws of PM10,NO2,SO2,air pollution index has very important practical significance.Based on 2001,2005,2009 month concentrations of PM10,NO2,SO2 in Chongqing city, annual mean concentration of PM10,NO2,SO2 from2001 to 2010, daily air quality (no partition) form2001 to 2010, daily air quality in Chongqing City (partition), the percentage ofâ… days comparisons with other capital city, the rates of air quality level form 2001to2010.through assessment methods, mathematical statistics, GIS spatial analysis methods, I has concluded that the year,season month,law of air quality in Chongqing makes the spatial distribution figure of air pollution index.At the same time, this paper compares the percentage of I days during 2006 to 2010with other capital city. This paper concludes the following rules and conclusion:The concentration of PM10,NO2,SO2 roughly decline during2001-2010. The concentration of PM10 has been higher than the National Secondary Standard (0.1 mg/m3) concentration limits and has been the primary pollutants in Chongqing. Nitrogen dioxide concentrations are low and have been lower than the National Secondary Standard. The concentrations of SO2 roughly decline, but they have been higher than the National Secondary Standard (0.06 mg/m3) concentration limits. During 2009 to 2010 the concentrations of SO2 are under the National Secondary Standard..Air pollution index and comprehensive pollution index is reduced year by year during 2001-2010. I days and good days are more and more. Good days have increased form 56.7% in 2001 to 85.2% in 2010.In the first quarter, air quality is poorer. In the third quarter, the air quality is better.The air pollution of Dadukou,Yuzhong,Jiulongpo,Shapingba are severer. The air pollution of Beibei,YuBei are lighter. Through comparing the percentage of theâ… days during 2006 to 2010 with other capital city, this paper concludes that the air quality in Chongqing is basically in after. This explains the Chongqing environment protective measures should be further enhanced and this also that the Chongqing environment has a certain relationship with unique natural geographical environment.The main influence factors of Chongqing air quality are natural aspects and social economic factors. Natural factors include the climate meteorological factors and terrain factors. The social economic factors include industrial layout and the energy structure,transportation,policy and pollution control measures.Control air pollution should adjust the energy structure industrial layout,control building dust,increase urban greening area,strictly control the main vehicle exhaust pollution,promote clean energy,develop cleaner production gradually...