Study On Aerosol Optical Properties And Its Relationship With Land Cover In The Ebinur Lake Basin

Ebinur Lake Basin of Xinjiang in China is an important area along the"Belt and Road".Its ecological and atmospheric environmental problems have attracted public attention.In order to monitor the quality of atmospheric environment in Ebinur Lake Region,and explore the relationship between aerosol and underlying surface.In this paper,based on the field aerosol data obtained Jinghe from Wusu county,the aerosol optical parameters include Aerosol Optical Depth(AOD),Angstr?m Wavelength index(?),Turbidity coefficient(?)and so on were analyzed.We selected MODISaerosolproductdatafrom2008to2016 andanalyzedthe aerosol temporal-spatial changes in this region.The main underlying surface factors of spatial and temporal variation characteristics were analyzed.The reasons affecting them were found out and a connection with AOD was established,to farther the land use and land cover(LUCC)with AOD response mechanism in the Ebinur Lake region.The results showed that:(1)By calculating the surface aerosol data,we got AOD,?and?.During the observation period,in Wusu area,the main aerosol particles were fine particles,which weremainlyurbanindustrialaerosols.AndinJinghearea,the aerosol particles existed in the form of coarse and fine particles.The increase of coarse particles was the main factor to cause the high value of AOD,the influence of fine particles was relatively small on the aerosol pollution area.From the remote sensing images,we could found in the 2010~2016 AOD mostly located in mid-eastern and northern of the Wusu,eastern of the Bole area and western of the Jinghe.High value area concentrated in Wusu,Kuitun and Dushanzi Industrial Zone,the main factors were dust weather and industrial exhaust emissions in the region.Linear fitting of AOD data and the same time of the MODIS aerosol products,showed that R~2 was0.80 and MOD04-AOD can reflect the AOD situation to a certain extent.(2)From 2008 to 2016,water body and other land,two types of land cover area was reduced.Cultivated land,forest land and urban land area showed a trend of increase;in 2008-2016,The forest land,arable land,water,urban land,other land use types and plaques in the total area of the landscape,other land scale in the first place,the plaque percentage changed bigger difference;Cultivated land from 2008 to 2016 in plaque area percentage increases,urban land proportion in reducing plaque,plaque quantity and type proportion and number of plaques.(3)NDVI and AOD has significant negative correlation,the high vegetation cover corresponds to the correlation of AOD is also higher.Urban land has good correlation with AOD and present positive correlation,the bigger the city,urban land,the more the AOD is also higher.The correlation of cultivated land,urban land and its corresponding particle pollution.JingHe area of cultivated land generally negatively related with particle pollution.Urban land in addition to the class I,and the rest are positive correlation,and the more serious air pollution,the stronger the correlation with city and shows that urban development for the region is seriously influenced the air quality.WuSu land for aerosol effects in the lighter,and urban land strongly affect the air quality is bad weather.Human activity is the region's main aerosol concentration effect,urban land area is the main cause of air pollution.To sum up,the natural and human's interference in the landscape,can directly affect the concentration of atmospheric aerosol.To sum up,this study combined with satellite and ground measured data to the discussion of ebinur lake basin atmospheric aerosol optical parameters,is helpful to deepen understanding of atmospheric aerosol optical properties,for the comprehensive monitoring of AOD to provide the necessary data and theoretical basis.The relationship between AOD and land cover,the ecological environment of ebinur lake basin and development plan to provide some reference.