中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地理科学与资源研究所
  3. 中国科学院地理科学与资源研究所
Spatio-temporal trends of dust emissions triggered by desertification in China

文献类型：期刊论文

作者Wang, Xunming1,2; Cai, Diwen1,2; Chen, Siyu3; Lou, Junpeng1; Liu, Fa1; Jiao, Linlin1; Cheng, Hong4; Zhang, Caixia5; Hua, Ting5; Che, Huizheng6
刊名CATENA
出版日期2021-05-01
卷号200页码:8
ISSN号0341-8162
关键词Dust emission Desertification Gobi desert China
DOI10.1016/j.catena.2021.105160
通讯作者Wang, Xunming(xunming@igsnrr.ac.cn)
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.
资助项目National 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]
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
出版者ELSEVIER
WOS记录号WOS:000620777400024
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Key Frontier Program of Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/160425]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Xunming
作者单位1.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
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]. 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.

入库方式： OAI收割

来源：地理科学与资源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。