globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.05.002
论文题名:
Artemisia/Chenopodiaceae ratio from surface lake sediments on the central and western Tibetan Plateau and its application
作者: Ma Q.; Zhu L.; Wang J.; Ju J.; Lü X.; Wang Y.; Guo Y.; Yang R.; Kasper T.; Haberzettl T.; Tang L.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 479
起始页码: 138
结束页码: 145
语种: 英语
英文关键词: Indian summer monsoon ; Lake Tangra Yumco ; Pollen ratio ; Tibetan Plateau ; Transitional period
英文摘要: Artemisia and Chenopodiaceae are the two main pollen taxa in studies of lake sediments on the central and western Tibetan Plateau (TP). In this paper, we present Artemisia/Chenopodiaceae (A/C) ratios in pollen assemblages of surface sediments from 42 lakes on the central and western TP. Relationships between vegetation, climate and A/C ratio are investigated. The results show that the A/C ratio in the study region can distinguish desert from steppe vegetation. As a whole, the A/C ratio was higher than 1.2 in the steppe vegetation and lower than 1.2 in the desert vegetation zone. Statistical analysis revealed that the A/C ratio can be used as a moisture indicator on the TP. Based on the A/C ratio in pollen assemblages of sediment core TAN12-2 from Lake Tangra Yumco, we reconstructed the vegetation and climate history of the southern TP during the transitional period from the late glacial to the Holocene (17.5–10 cal kyr BP). From 17.5 to 16 cal kyr BP, desert vegetation occurred and climate was extremely dry. During 16–15 cal kyr BP, desert was replaced by steppe vegetation and climate became wetter. From 15 to 10 cal kyr BP, the lake basin of Tangra Yumco was covered by the steppe vegetation and climate tended to be more humid. Comparing our results with other lacustrine records on the TP, we found that the Indian summer monsoon (ISM) significantly affected the southern TP earlier than the northeastern TP. © 2017 Elsevier B.V.
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被引频次[WOS]:27   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67812
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes (TEL), Institute of Tibetan Plateau Research (ITP), Chinese Academy of Sciences, Beijing, China; CAS Center for Excellence in Tibetan Plateau Earth System, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Institute of Geography, Friedrich-Schiller-University Jena, Jena, Germany; Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing, China

Recommended Citation:
Ma Q.,Zhu L.,Wang J.,et al. Artemisia/Chenopodiaceae ratio from surface lake sediments on the central and western Tibetan Plateau and its application[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,479
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