| Due to the rapid urbanization process,the area of the built-up area of the Central Plains Urban Agglomeration in Henan Province and the length of the traffic roads have grown rapidly,resulting in an increasingly prominent problem of atmospheric ash,resulting in low atmospheric visibility and poor air quality,which has a certain impact on human health.Establishing dust source emission inventory and identifying spatial emission characteristics of dust source particles play an important role in effectively controlling air pollution.With the soil dust,construction dust and road dust in the Central Plains Urban Agglomeration of Henan Province as the research object,this paper tried to carry out research work to provide theoretical basis for the development of dust pollution control strategy.Firstly,with 2016 as the base year,comprehensive remote sensing information,vector road data and meteorological data will be used to determine the soil dust and construction of the Central Plains Urban Agglomeration in Henan Province?Zhengzhou,Luoyang,Kaifeng,Jiaozuo,Xinxiang,Jiyuan,Xuchang,Luohe and Pingdingshan city?.The level of activity and emission factors of dust and pavement road dust.The results show that the area of bare land in the Central Plains Urban Agglomeration in Henan Province is 324.78 km2 in 2016,the construction area is387.49 km2,the length of paved road is 67194 km,the dust emission factor PM10 of the bare ground is 5.79 g/m2·a,and the dust emission factor PM10 of the construction is 1.07×10-4 t/?m2·month?.Different types of road dust emission factors are different,the rural road emission factor is the largest,PM10 is 0.81 g/VKT,national emission factor is the smallest,PM10 is 0.73 g/VKT.Secondly,the emission factor method is used to estimate the annual emissions of TSP,PM10 and PM2.5 from the dust source of the Central Plains Urban Agglomeration in Henan Province,and the spatial distribution of the emission of each dust source is realized by combining GIS technology.The results show that the TSP of the Central Plains Urban Agglomeration in Henan Province was 839,550 t in 2016,318,307 t in PM10 and 69,756 t in PM2.5 The total annual emissions of the three types of dust sources accounted for the largest construction dust source,and TSP,PM10 and PM2.5accounted for 58.48%,79.06%and 76.95%of the total.Zhengzhou City is a high-value area for dust emission from the Central Plains Urban Agglomeration in Henan Province,followed by large emissions from Kaifeng and Luoyang,and relatively small emissions from Jiyuan and Luohe.Finally,for Zhengzhou City,a typical city in the Central Plains Urban Agglomeration in Henan Province,a list of emissions sources for Zhengzhou City in2016 was established.The results show that the construction dust is the main source of pollution of the dust particles in Zhengzhou City,and PM100 accounts for 89.68%of the total dust emissions.Dust source emissions are mainly concentrated in the main urban area and the area bordering the main urban area,while the gridding emission intensity of Dengfeng and other areas far from the main urban area is small. |
PDF Full Text Request