中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Distribution of GDGTs in lake surface sediments on the Tibetan Plateau and its influencing factors

文献类型:期刊论文

作者Wang, MD; Wang, MD (Wang MingDa)1,2; Liang, J (Liang Jie)1,2; Hou, JZ (Hou Juzhi)1; Hu, L (Hu Liang)3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2016
卷号59期号:5页码:961-974
关键词Dialkyl Glycerol Tetraethers Crenarchaeotal Membrane-lipids Summer Monsoon Paleoclimate Reconstruction Paleotemperature Proxy Midlatitude Westerlies Environmental Controls Particulate Matter Temperature Proxy Branched Gdgts
DOI10.1007/s11430-015-5214-3
文献子类Article
英文摘要Quantitative paleotemperature records are vital not only for verifying and improving the accuracy of climate model simulations, but also for estimating the amplitude of temperature variability under global warming scenarios. The Tibetan Plateau (TP) affects atmospheric circulation patterns due to its unique geographical location and high elevation, and studies of the mechanisms of climate change on the TP are potentially extremely valuable for understanding the relationship of the region with the global climate system. With the development of biomarker-based proxies, it is possible to use lake sediments to quantitatively reconstruct past temperature variability. The source of Glycerol Dialkyl Glycerol Tetraethers (GDGTs) in lake sediments is complex, and their distribution is controlled by both climatic and environmental factors. In this work, we sampled the surface sediments of 27 lakes on the TP and in addition obtained surface soil samples from six of the lake catchments. We analyzed the factors that influence GDGT distribution in the lake sediments, and established quantitative relationship between GDGTs and Mean Annual Air Temperature (MAAT). Our principal findings are as follows: the majority of GDGTs in the lake sediments are bGDGTs, followed by crenarchaeol and GDGT-0. In most of the lakes there were no significant differences between the GDGT distribution within the lake sediments and the soils in the same catchment, which indicates that the contribution of terrestrial material is important. iGDGTs in lake sediments are mainly influenced by water chemistry parameters (pH and salinity), and that in small lakes on the TP, TEX86 may act as a potential proxy for lake pH; however, in contrast bGDGTs in the lake sediments are mainly controlled by climatic factors. Based on the GDGT distribution in the lake sediments, we used proxies (MBT, CBT) and the fractional abundance of bGDGTs (f(abun)) to establish calibrations between GDGTs and MAAT, respectively, which potentially provide the basis for paleoclimatic reconstruction on the TP.
学科主题地质学
语种英语
WOS记录号WOS:000374966200008
源URL[http://ir.itpcas.ac.cn/handle/131C11/7705]  
专题青藏高原研究所_图书馆
通讯作者Wang, MD
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
3.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China
推荐引用方式
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Wang, MD,Wang, MD ,Liang, J ,et al. Distribution of GDGTs in lake surface sediments on the Tibetan Plateau and its influencing factors[J]. SCIENCE CHINA-EARTH SCIENCES,2016,59(5):961-974.
APA Wang, MD,Wang, MD ,Liang, J ,Hou, JZ ,&Hu, L .(2016).Distribution of GDGTs in lake surface sediments on the Tibetan Plateau and its influencing factors.SCIENCE CHINA-EARTH SCIENCES,59(5),961-974.
MLA Wang, MD,et al."Distribution of GDGTs in lake surface sediments on the Tibetan Plateau and its influencing factors".SCIENCE CHINA-EARTH SCIENCES 59.5(2016):961-974.

入库方式: OAI收割

来源:青藏高原研究所

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