NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Vegetation and climate history in arid western China during MIS2: New insights from pollen and grain-size data of the Balikun Lake, eastern Tien Shan
Zhao, Yongtao1; An, Cheng-Bang1; Mao, Limi (毛礼米)2; Zhao, Jiaju1; Tang, Lingyu (唐领余)2; Zhou, Aifeng1; Li, Hu1; Dong, Weimiao1; Duan, Futao1; Chen, Fahu1
2015-10-15
Source PublicationQUATERNARY SCIENCE REVIEWS
ISSN0277-3791
Volume126Pages:112-125
Abstract

Marine Isotope Stage (MIS) 2 is mostly a cold period encompassing the Last Glacial Maximum (LGM), but the regional expression of MIS2 in arid areas of China is not well known. In this paper, we use high-resolution lacustrine pollen and grain-size records from Balikun Lake to infer vegetation, lake evolution, and climate in arid western China during MIS2. Our results suggest that: 1) the regional vegetation around Balikun was mainly dominated by desert and/or desert-steppe, and Balikun Lake was relatively shallow and experienced high aeolian input during MIS2; 2) distinctive runoff from mountain glacial meltwater in the eastern parts of the Balikun basin caused a high relative abundance of Artemisia pollen during the LGM (26.5-19.2 cal kyr BP), while simultaneously the desert areas expanded as indicated by the high abundance of desert shrubs (e.g., Elaeagnaceae, Rhamnaceae, Hippophae). This cold and dry LGM climate triggered a substantial lowering of lake level; 3) an extremely cold and dry climate prevailing from 17.0 to 15.2 cal kyr BP, correlated with Heinrich event 1 (H1), would explain the low vegetation cover found then; and 4) the warm and humid Bolling/Allered interstadial (BA: ca. 15 ca. 13 cal kyr BP) is clearly recorded in the Balikun region by the development of wetland herb communities (e.g., Poaceae, Cyperaceae, Typha), and the lake level rose due to increased runoff. Our results challenge the traditional view of cold and wet climatic conditions and high lake levels in arid western China during the LGM, and we propose that changes in local temperature modulated by July insolation was an indispensable factor in triggering vegetation evolution in the Balikun region during MIS2. (C) 2015 Elsevier Ltd. All rights reserved.

KeywordVegetation Climate Pollen Analysis Grain Size Last Glacial Maximum Balikun Lake Western China
DOI10.1016/j.quascirev.2015.08.027
Language英语
WOS KeywordLast Glacial Maximum ; Quaternary Environmental-changes ; Northeastern Tibetan Plateau ; Mountains Nw China ; Central-asia ; Northwestern China ; High-resolution ; Late Pleistocene ; Tengger Desert ; Baikal Region
Funding ProjectNational Natural Science Foundation of China (NSFC)[41130102] ; National Natural Science Foundation of China (NSFC)[41372170]
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000363823000008
Funding OrganizationNational Natural Science Foundation of China (NSFC)
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/12152
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorAn, Cheng-Bang
Affiliation1.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Coll Earth & Environm Sci, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yongtao,An, Cheng-Bang,Mao, Limi ,et al. Vegetation and climate history in arid western China during MIS2: New insights from pollen and grain-size data of the Balikun Lake, eastern Tien Shan[J]. QUATERNARY SCIENCE REVIEWS,2015,126:112-125.
APA Zhao, Yongtao.,An, Cheng-Bang.,Mao, Limi .,Zhao, Jiaju.,Tang, Lingyu .,...&Chen, Fahu.(2015).Vegetation and climate history in arid western China during MIS2: New insights from pollen and grain-size data of the Balikun Lake, eastern Tien Shan.QUATERNARY SCIENCE REVIEWS,126,112-125.
MLA Zhao, Yongtao,et al."Vegetation and climate history in arid western China during MIS2: New insights from pollen and grain-size data of the Balikun Lake, eastern Tien Shan".QUATERNARY SCIENCE REVIEWS 126(2015):112-125.
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