干旱区生态环境知识资源中心(Arid): Characteristics of dust aerosols and identification of dust sources in Xinjiang, China

Arid

DOI	10.1016/j.atmosenv.2021.118651
	Characteristics of dust aerosols and identification of dust sources in Xinjiang, China
	Liu, Jie; Ding, Jianli; Rexiding, Mayila; Li, Xiaohang; Zhang, Junyong; Ran, Si; Bao, Qingling; Ge, Xiangyu
通讯作者	Ding, JL (corresponding author), Xinjiang Univ, Key Lab Smart City & Environm Modelling, Higher Educ Inst, Coll Resources & Environm Sci, Urumqi 830046, Peoples R China.
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2021
卷号	262
英文摘要	Changes in atmospheric particulate matter content directly affect the Earth-atmosphere system balance and climate change and indirectly affect the environment and ecology. Therefore, this matter is receiving increasing attention. A typical arid area with a fragile ecological environment and frequent dust activities, Xinjiang, China, was investigated using Moderate Resolution Imaging Spectroradiometer (MODIS) daily aerosol optical thickness and angstrom ngstro center dot m wavelength exponent data to obtain the temporal and spatial distribution characteristics of longterm dust aerosols over 20 years. The frequency of occurrence was calculated to accurately identify anthropogenic and natural sources, and data, such as wind speed, were superimposed to quantitatively estimate dust aerosol emissions. The factors that influenced dust aerosol emissions are discussed. The results show that the distribution of dust aerosols in South and North Xinjiang is obviously different, and the average dust aerosol optical depth (DOD) in spring is higher than that in other seasons. The sources of natural dust have little variation and are primarily located in Lop Nur, on the edges of the Taklamakan and Gurbantunggut deserts, in the central Tuha Basin, and in dried-up lakes. The sources of anthropogenic dust are mainly distributed in the farmland areas of the oasis plain and the impact fan plain. Natural dust aerosols are dominant in Xinjiang, with high natural dust emissions in spring. Changes in anthropogenic dust aerosols are caused by production activities, and the annual average anthropogenic dust emissions account for 8% of the total dust emissions. Precipitation can promote a reduction in natural dust emissions. Topography has an obvious effect on the formation and transportation of dust aerosols, which manifests as the frequent occurrence of dust in the basin. The population density data and Defense Meteorological Satellite Program/Operational Linescan System (DMSP/OLS) nighttime light data reveal, that the intensity of human activities has a great impact on anthropogenic dust aerosols. This study provides support for research on how aerosols affect climate and environmental changes in Xinjiang.
英文关键词	Arid area Dust aerosols Dust sources Dust deposition fluxes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000686896900003
WOS关键词	OPTICAL-PROPERTIES ; MODIS ; DISCRIMINATION ; DISTRIBUTIONS ; CLIMATOLOGY ; VALIDATION ; PRODUCTS ; AERONET ; IMPACT ; REGION
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362655
作者单位	[Liu, Jie; Ding, Jianli; Rexiding, Mayila; Li, Xiaohang; Zhang, Junyong; Ran, Si; Bao, Qingling; Ge, Xiangyu] Xinjiang Univ, Key Lab Smart City & Environm Modelling, Higher Educ Inst, Coll Resources & Environm Sci, Urumqi 830046, Peoples R China; [Liu, Jie; Ding, Jianli; Rexiding, Mayila; Li, Xiaohang; Zhang, Junyong; Ran, Si; Bao, Qingling; Ge, Xiangyu] Xinjiang Univ, Key Lab Oasis Ecosyst, Urumqi 830046, Peoples R China; [Ding, Jianli] Xinjiang Univ, Technol Innovat Ctr Cent Asia GeoInformat Exploit, Minist Nat Resources, Urumqi 830046, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jie,Ding, Jianli,Rexiding, Mayila,et al. Characteristics of dust aerosols and identification of dust sources in Xinjiang, China[J]. 新疆大学,2021,262.
APA	Liu, Jie.,Ding, Jianli.,Rexiding, Mayila.,Li, Xiaohang.,Zhang, Junyong.,...&Ge, Xiangyu.(2021).Characteristics of dust aerosols and identification of dust sources in Xinjiang, China.ATMOSPHERIC ENVIRONMENT,262.
MLA	Liu, Jie,et al."Characteristics of dust aerosols and identification of dust sources in Xinjiang, China".ATMOSPHERIC ENVIRONMENT 262(2021).