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 |
| DOI | 10.1007/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 GB/T 7714 | 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
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。