干旱区生态环境知识资源中心(Arid): Spatio-temporal trends of dust emissions triggered by desertification in China

Arid

DOI	10.1016/j.catena.2021.105160
	Spatio-temporal trends of dust emissions triggered by desertification in China
	Wang, Xunming; Cai, Diwen; Chen, Siyu; Lou, Junpeng; Liu, Fa; Jiao, Linlin; Cheng, Hong; Zhang, Caixia; Hua, Ting; Che, Huizheng
通讯作者	Wang, XM (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	200
英文摘要	The spatial and temporal trends of potential dust emissions from severe aeolian desertified lands and Gobi desert surfaces in China were investigated based on field sample collections, wind tunnel experiments, and historical wind records. The results showed that aeolian desertified lands and Gobi desert surfaces are both key landscapes for dust emissions. The dust emission rate in Gobi deserts was approximately 19% of what originated from desertified lands at the beginning of the 1970s but this ratio increased to 26% in 2015. Considering temporal variations of dust emission over aeolian desertified lands and the Gobi desert surfaces, from the 1980s to the present, the contribution of the Gobi desert surfaces on dust emissions decreased from 71% to 31% of that originating in desertified lands. From the 1970s to 2015, the average amounts of PM2.5 (particulate matter with diameter less than 2.5 mu m), PM5, PM10, and PM50 emitted from desertified lands are 17.6, 29.4, 39.6, and 65.2 Tg yr(-1), while that of PM5, PM10, and PM50 emitted from the Gobi desert surfaces are 18.4, 26.5, 40.4 Tg yr(-1), respectively. Compared with that in the 1970s, potential dust emissions after 2000 from desertified lands and the Gobi desert surfaces decreased by 75% and 71%, respectively. In addition, the wind tunnel experiment results and statistics indicate that the potential dust emissions in China are far lower than that of model simulations. There are significant spatio-temporal variations in the potential dust aerosol source areas and intensities of dust emissions in China over the past decades.
英文关键词	Dust emission Desertification Gobi desert China
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620777400024
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	兰州大学 ; 中国科学院西北生态环境资源研究院 ; 中国科学院地理科学与资源研究所 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349794
作者单位	[Wang, Xunming; Cai, Diwen; Lou, Junpeng; Liu, Fa; Jiao, Linlin] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; [Wang, Xunming; Cai, Diwen] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Chen, Siyu] Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China; [Cheng, Hong] Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; [Zhang, Caixia; Hua, Ting] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Che, Huizheng] Chinese Acad Meteorol Sci, Inst Atmospher Composit, State Key Lab Severe Weather LASW, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xunming,Cai, Diwen,Chen, Siyu,et al. Spatio-temporal trends of dust emissions triggered by desertification in China[J]. 兰州大学, 中国科学院西北生态环境资源研究院, 中国科学院地理科学与资源研究所, 北京师范大学,2021,200.
APA	Wang, Xunming.,Cai, Diwen.,Chen, Siyu.,Lou, Junpeng.,Liu, Fa.,...&Che, Huizheng.(2021).Spatio-temporal trends of dust emissions triggered by desertification in China.CATENA,200.
MLA	Wang, Xunming,et al."Spatio-temporal trends of dust emissions triggered by desertification in China".CATENA 200(2021).