IGSNRR OpenIR
Spatio-temporal trends of dust emissions triggered by desertification in China
Wang, Xunming1,2; Cai, Diwen1,2; Chen, Siyu3; Lou, Junpeng1; Liu, Fa1; Jiao, Linlin1; Cheng, Hong4; Zhang, Caixia5; Hua, Ting5; Che, Huizheng6
2021-05-01
Source PublicationCATENA
ISSN0341-8162
Volume200Pages:8
Corresponding AuthorWang, Xunming(xunming@igsnrr.ac.cn)
AbstractThe 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.
KeywordDust emission Desertification Gobi desert China
DOI10.1016/j.catena.2021.105160
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41930640] ; National Natural Science Foundation of China[41771012] ; National Key Research and Development Program of China[2016YFA0601900] ; Key Frontier Program of Chinese Academy of Sciences[QYZDJ-SSWDQC043]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Frontier Program of Chinese Academy of Sciences
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000620777400024
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/160426
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Xunming
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China
4.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
5.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China
6.Chinese Acad Meteorol Sci, Inst Atmospher Composit, State Key Lab Severe Weather LASW, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xunming,Cai, Diwen,Chen, Siyu,et al. Spatio-temporal trends of dust emissions triggered by desertification in China[J]. CATENA,2021,200:8.
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,200,8.
MLA Wang, Xunming,et al."Spatio-temporal trends of dust emissions triggered by desertification in China".CATENA 200(2021):8.
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