干旱区生态环境知识资源中心(Arid): Using composite fingerprints to quantify the potential dust source contributions in northwest China

Arid

DOI	10.1016/j.scitotenv.2020.140560
	Using composite fingerprints to quantify the potential dust source contributions in northwest China
	Luo, Haiping; Guan, Qingyu; Pan, Ninghui; Wang, Qingzheng; Li, Huichun; Lin, Jinkuo; Tan, Zhe; Shao, Wenyan
通讯作者	Guan, QY
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	742
英文摘要	Dust storms have a profound impact on the atmospheric environment, global climate change, and human health, so it is of great importance to strengthen related research. The main areas of occurrence and frequency of dust storms in northwestern China were distinguished by measuring the concentration of geochemical elements in the topsoil and atmospheric dust samples, combined with the HYSPLIT backward trajectory model, MODIS true-color satellite images, and PM10 real-time monitoring data. On this basis, the composite fingerprints method was used to establish an end-member model between the concentration of dust storm samples and topsoil samples, and then to trace the sand and dust sources in northwest China and quantify their source contributions. The results showed that the main potential source areas causing sandstorms were located in the Kumtag Desert, Hexi area, and the Gobi Desert in the central and western parts of Inner Mongolia. Overall, the contributions from natural sources were greater than those from anthropogenic sources, especially at Alxa League. In addition to natural sources, anthropogenic dust sources contributed highly to dust storms, with a contribution rate of approximately 40% in cities. The main dust source in Zhangye City was from agriculture areas. The contribution of the potential dust sources in the west of the study area showed a decreasing trend from west to east because of the distance effect. Because of the influence of the prevailing westerly winds in the east, the sources of dust were relatively extensive. The Badain Jaran Desert and Tengger Desert were not the main dust sources in the study area because of artificial sand control measures and the low amounts of fine-grained components in sandy deserts. These methods and results are of great importance for sustainable development in northwest China. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Source contribution Composite fingerprints Natural dust Anthropogenic dust
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000569414500009
WOS关键词	TRACING SEDIMENT SOURCES ; ASIAN DUST ; NORTHERN CHINA ; ANTHROPOGENIC DUST ; MINERAL DUST ; EAST-ASIA ; AGRICULTURAL CATCHMENT ; SOURCE APPORTIONMENT ; SPATIAL-DISTRIBUTION ; TEMPORAL VARIATIONS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326302
作者单位	[Luo, Haiping; Guan, Qingyu; Pan, Ninghui; Wang, Qingzheng; Li, Huichun; Lin, Jinkuo; Tan, Zhe; Shao, Wenyan] Lanzhou Univ, Gansu Key Lab Environm Pollut Predict & Control, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Luo, Haiping,Guan, Qingyu,Pan, Ninghui,et al. Using composite fingerprints to quantify the potential dust source contributions in northwest China[J]. 兰州大学,2020,742.
APA	Luo, Haiping.,Guan, Qingyu.,Pan, Ninghui.,Wang, Qingzheng.,Li, Huichun.,...&Shao, Wenyan.(2020).Using composite fingerprints to quantify the potential dust source contributions in northwest China.SCIENCE OF THE TOTAL ENVIRONMENT,742.
MLA	Luo, Haiping,et al."Using composite fingerprints to quantify the potential dust source contributions in northwest China".SCIENCE OF THE TOTAL ENVIRONMENT 742(2020).