干旱区生态环境知识资源中心(Arid): Drought and land use/land cover impact on dust sources in Southern Great Plains and Chihuahuan Desert of the US: Inferring anthropogenic effect

Arid

DOI	10.1016/j.scitotenv.2020.142461
	Drought and land use/land cover impact on dust sources in Southern Great Plains and Chihuahuan Desert of the US: Inferring anthropogenic effect
	Kandakji, Tarek; Gill, Thomas E.; Lee, Jeffrey A.
通讯作者	Kandakji, T (corresponding author), Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	755
英文摘要	Exploring the effects of drought and land use/land cover (LULC) on aeolian dust emission is important to enhance dust models to account for anthropogenic land surface change. Hitherto, there has been no systematic effort to quantitatively estimate associations between LULC and drought with the number of dust point sources as a surrogate for emission on both local and global levels. Previously, we created a dataset of dust emission point sources in the southwestern United States (U.S.) during the years 2001-2016, including a period of extreme drought. However, that work did not investigate the effects of drought on the detected dust point sources. Here, we used that dataset to test the hypothesis that there is a statistically significant association between drought level and LULC that may contribute to the number of dust point sources in the Southern Great Plains and Chihuahuan Desert regions of the U.S. The spatio-temporal analysis showed that the geographic mean center for all the dust points, as well as the majority of the annual geographic mean centers between 2001 and 2016, is located in the Southern High Plains. Areas suffering from severe to exceptional drought tend to attract the annual geographic mean center of dust points. The chi-square analysis results showed a significant association between land cover type (as defined in the National Land Cover Database) and drought level with the number of dust point sources (chi(2) (6) = 45.54, p < 0.001), thus supporting the proposed hypothesis. Results from this study indicate that human activities in dust-prone regions have clear potential to worsen the negative impacts of drought by changing LULC and increasing erodibility in multiple ways. This study paves the way for future efforts that can utilize more data and conduct more robust statistical analysis of the drought-LULC-dust linkage on both regional and global scales. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Blowing dust Drought level Chihuahuan Desert Southern Great Plains Land management Quantitative analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000600537400022
WOS关键词	WIND EROSION ; UNITED-STATES ; VEGETATION COVER ; CLIMATE-CHANGE ; STORM EVENTS ; BLOWING DUST ; NEW-MEXICO ; ECOSYSTEM ; EMISSION ; DEGRADATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348195
作者单位	[Kandakji, Tarek; Lee, Jeffrey A.] Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA; [Gill, Thomas E.] Univ Texas El Paso, Dept Geol Sci, El Paso, TX 79968 USA
推荐引用方式 GB/T 7714	Kandakji, Tarek,Gill, Thomas E.,Lee, Jeffrey A.. Drought and land use/land cover impact on dust sources in Southern Great Plains and Chihuahuan Desert of the US: Inferring anthropogenic effect[J],2021,755.
APA	Kandakji, Tarek,Gill, Thomas E.,&Lee, Jeffrey A..(2021).Drought and land use/land cover impact on dust sources in Southern Great Plains and Chihuahuan Desert of the US: Inferring anthropogenic effect.SCIENCE OF THE TOTAL ENVIRONMENT,755.
MLA	Kandakji, Tarek,et al."Drought and land use/land cover impact on dust sources in Southern Great Plains and Chihuahuan Desert of the US: Inferring anthropogenic effect".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021).