Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40333-016-0014-y |
Geochemical weathering of aeolian sand and its palaeoclimatic implications in the Mu Us Desert, northern China, since the Late Holocene | |
Liu Bing1,2,3; Jin Heling1,2; Sun Zhong2; Zhao Shuang3 | |
通讯作者 | Jin Heling |
来源期刊 | JOURNAL OF ARID LAND |
ISSN | 1674-6767 |
EISSN | 2194-7783 |
出版年 | 2016 |
卷号 | 8期号:5页码:647-659 |
英文摘要 | In the semi-arid and arid regions of northern China, geochemical behavior of the aeolian deposit is closely related to climatic and environmental changes, which was used to reconstruct the past history of environmental evolution and possibly forcing mechanisms. However, the related result was still scarce due to the lack of detailed geochemical analysis results in the desert sediments. In the present study, we systematically analyzed the geochemical components and parameters of the paleo-aeolian sand dune and modern mobile sand deposits in the Mu Us Desert and discuss the climatic variation inferred from the paleo-aeolian sand dune during the past 4.2 ka BP. The results indicated that (1) geochemical composition of the sandy deposits were dominated by SiO2, Al2O3 and Na2O and the deposits probably originated from the widespread upper continental crust (UCC) and were formed by long-term weathering, transport and re-deposition; (2) these sandy deposits were subjected to weaker weathering or uneven weathering under cold and dry conditions, and had highly similar material sources and degrees of weathering and leaching in general; and (3) the direct OSL (Optically Stimulated Luminescence) dating ages and geochemical parameters from the palaeosol-aeolian sand dune indicated that the regional climate change experienced several typically cold and warm intervals. These intervals are 4.2, 2.8 ka BP and Little Ice Age and Medieval Warm Period, which probably attributed to periodic variations of the Asian summer monsoonal strength and cold events of the northern Atlantic Ocean in low and high latitudes of the Northern Hemisphere. Our results suggest that the development of the sand dune in the Mu Us Desert provided a suitable archive for understanding the past local climatic change, which is linked to the global climatic change. |
英文关键词 | climatic change geochemical component weathering degree Late Holocene Mu Us Desert |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000378931000001 |
WOS关键词 | CLIMATIC-CHANGE ; ATLANTIC CLIMATE ; SUMMER MONSOON ; INNER-MONGOLIA ; LAKE ; INTENSITY ; SEDIMENT ; DEPOSITS ; PROVINCE ; PLATEAU |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 兰州大学 ; 中国科学院西北生态环境资源研究院 ; 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/2XILL650/194210 |
作者单位 | 1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 2.Chinese Acad Sci, Key Lab Desert & Desertificat, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; 3.Lanzhou Univ, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Liu Bing,Jin Heling,Sun Zhong,et al. Geochemical weathering of aeolian sand and its palaeoclimatic implications in the Mu Us Desert, northern China, since the Late Holocene[J]. 兰州大学, 中国科学院西北生态环境资源研究院, 北京师范大学,2016,8(5):647-659. |
APA | Liu Bing,Jin Heling,Sun Zhong,&Zhao Shuang.(2016).Geochemical weathering of aeolian sand and its palaeoclimatic implications in the Mu Us Desert, northern China, since the Late Holocene.JOURNAL OF ARID LAND,8(5),647-659. |
MLA | Liu Bing,et al."Geochemical weathering of aeolian sand and its palaeoclimatic implications in the Mu Us Desert, northern China, since the Late Holocene".JOURNAL OF ARID LAND 8.5(2016):647-659. |
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