Analysis Of Factors Affecting PM10 Mass Concentration Based On Spatial Location

The air quality in Kunming spring and autumn is relatively poorer.The air pollutants are mainly the pollution of PM10 mass concentration,while the road dust and site dust pollution are the main factors leading to the excessive concentration of PM10 mass concentration.With the rapid development of Kunming's economy and the continuous expansion of urbanization scale,many construction sites have emerged in cities and towns in recent years,but there are few studies on PM10 mass concentration in Kunming's construction sites.Based on the real-time detection data of 27 construction sites in Kunming,this paper analyzes the correlation PM10 mass concentration with meteorological factors,and performs spatial Kriging interpolation for PM10 mass concentration,which lays the foundation for quantifying the management site PM 10 dust.The main contents of this paper include:1.The variation of PM10 mass concentration on 27 construction sites is analyzed,and the results are consistent with the cyclical changes of Kunming PM10 mass concentration(detected by meteorological monitoring stations).The influence of single meteorological factor on the mass concentration of PM 10 mass concentration is analyzed.It is found that dew point temperature and relative humidity are highly correlated with the PM 10 mass concentration.After the relative humidity is greater than 60%-80%,the relative humidity is proportional to the mass concentration of PM10 mass concentration,while the relative humidity is inversely proportional to the concentration of PM10 mass concentration when the relative humidity is lower than 60%-80%.At present,many governments use spray dustless vehicles to suppress dust,but without considering the current air humidity and atmospheric conditions,it is recommended that special evaluation studies should be carried out on the effects of the spray dustless vehicles in different atmospheric conditions,so as to avoid backfire,noise pollution and waste of labor and wealth.2.A stepwise regression method is used to find meteorological factors that significantly affect the PM10 mass concentration,and an optimal regression equation is established.Through the path analysis of meteorological factors that significantly affect the PM10 mass concentration,it is found that the relative influence of relative humidity on the PM10 mass concentration is the greatest;moreover,the relative humidity has the greatest indirect effect on the three meteorological factors of temperature,precipitation and pressure.Further analyzing the relative humidity that has a greater impact on the PM10 mass concentration.3.The spatial interpolation prediction of PM10 mass concentration in 27 construction sites is carried out by inverse distance weighted interpolation method and ordinary Kriging interpolation method.On this basis,calculating the PM 10 mass concentration residual value of each construction site and quantifying the PM10 dust contribution of every construction site,which lays the foundation for environmental taxation.