Geochemical evidence for seasonal variations in potential loess sources of the western Chinese Loess Plateau
文献类型：期刊论文
| 作者 | Wang, Xunming1,2; Lang, Lili1; Li, Hui2; Hua, Ting2; Wang, Guangtao2; Zhou, Na1; Jiao, Linlin1 |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 120页码:369-375 |
| 关键词 | Loess Source Principal components analysis Chinese Loess Plateau |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2015.09.009 |
| 通讯作者 | Wang, Xunming(xunming@igsnrr.ac.cn) |
| 英文摘要 | This paper aims to characterize seasonal variations in the potential sources of loess deposited on the western Chinese Loess Plateau (CLP). Fallout was sampled every five days between March 2013 and August 2014 at Jiuzhoutai, the site with the largest loess deposits in northwest China. A total of 45 macro and trace elements, as well as rare earth elements, were analyzed in the samples. The results show that, at present, the potential sources of loess are mixed with pollutants. After exclusion of the pollutants, principal component analysis (PCA) showed significant seasonal variations in the potential loess sources on the western CLP. During the spring, summer autumn, and winter periods, there are possibly six, four, and two potential loess sources, respectively, with crustal provenance at Jiuzhoutai. No significant differences in fallout amounts were found on the western CLP during periods with and without dust events, which suggests that the frequency of dust events may not be an effective index for deposition rates in areas of loess formation. The relatively high proportion of coarser material (>50 mu m in diameter) in the fallout indicates that at least part of the loess in the fallout samples originated from adjacent deserts and associated systems, and that both dry and wet deposition contributed equally to the fallout. Based on the significant seasonal and spatial variations in the loess sources, combined with variations in the link between the different particle size classes and the geochemical characteristics of potential components of the loess on the western CLP, the use of the geochemical characteristics of loess stratigraphic sequences as a proxy for regional paleoclimatic and environmental reconstructions should be carefully appraised. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | DUST STORMS ; NORTHERN CHINA ; PALEOCLIMATIC IMPLICATIONS ; MAGNETIC-SUSCEPTIBILITY ; NORTHWESTERN CHINA ; TIBETAN PLATEAU ; PROVENANCE ; DEPOSITS ; PALEOSOL ; RECORD |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000364255700038 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557194 |
| 专题 | 寒区旱区环境与工程研究所 |
| 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.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xunming,Lang, Lili,Li, Hui,et al. Geochemical evidence for seasonal variations in potential loess sources of the western Chinese Loess Plateau[J]. ATMOSPHERIC ENVIRONMENT,2015,120:369-375. |
| APA | Wang, Xunming.,Lang, Lili.,Li, Hui.,Hua, Ting.,Wang, Guangtao.,...&Jiao, Linlin.(2015).Geochemical evidence for seasonal variations in potential loess sources of the western Chinese Loess Plateau.ATMOSPHERIC ENVIRONMENT,120,369-375. |
| MLA | Wang, Xunming,et al."Geochemical evidence for seasonal variations in potential loess sources of the western Chinese Loess Plateau".ATMOSPHERIC ENVIRONMENT 120(2015):369-375. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
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。