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Assessing the ratio of archaeol to caldarchaeol as a salinity proxy in highland lakes on the northeastern Qinghai-Tibetan Plateau
Wang, HY (Wang, Huanye)[ 1,2 ]; Liu, WG (Liu, Weiguo)[ 1,3 ]; Zhang, CLL (Zhang, Chuanlun L.)[ 4,5 ]; Jiang, HC (Jiang, Hongchen)[ 6 ]; Dong, HL (Dong, Hailiang)[ 6,7,8 ]; Lu, HX (Lu, Hongxuan)[ 1 ]; Wang, JX (Wang, Jinxiang)[ 4 ]
2013-01-30
发表期刊ORGANIC GEOCHEMISTRY
卷号54页码:69-77
文章类型期刊论文
摘要

The ratio of archaeol to caldarchaeol (the ACE index) has been proposed recently as an index for paleosalinity reconstruction and is based principally on archaeal core lipids (CLs) from coastal salt pans (Turich, C., Freeman, K.H., 2011. Archaeal lipids record paleosalinity in hypersaline systems. Organic Geochemistry 42, 1147-1157). We have examined possible relationships between salinity and ACE in both CLs and intact polar lipids (IPLs) from suspended particulate matter (SPM) and surface sediments of lakes and surrounding soils on the northeastern Qinghai-Tibetan Plateau. Our results showed that ACE values were positively correlated with salinity in all samples; however, CL ACE values were systematically higher than IPL ACE values, probably due to different degradation kinetics of intact polar (IP) archaeol and IP caldarchaeol. On the other hand, surface sediment ACE values from both CLs and IPLs were lower than SPM ACE values, probably due to enhanced production of caldarchaeol relative to archaeol in the sediment. Our results demonstrate that the ACE proxy reflects changes in salinity in diverse environments on the Qinghai-Tibetan Plateau, which is promising for paleosalinity reconstruction; however, caution should be used when applying the salinity proxy before we have a better understanding of degradation kinetics of archaeal IPLs and in situ production of caldarchaeol and archaeol in sediments.

DOI10.1016/j.orggeochem.2012.09.011
收录类别SCI
语种英语
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被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10004
专题加速器质谱中心
通讯作者Liu, WG (Liu, Weiguo)[ 1,3 ]
作者单位1.State Key Laboratory of Loess and Quaternary Geology, IEE, CAS, Xi’an 710075, China;
2.Graduate School of Chinese Academy of Sciences, Beijing 100049, China;
3.School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
4.State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China;
5.Department of Marine Sciences, The University of Georgia, Athens, GA 30602, USA;
6.State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China;
7.Geomicrobiology Laboratory, China University of Geosciences, Beijing 100083, China;
8.Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, USA
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Wang, HY ,Liu, WG ,Zhang, CLL ,et al. Assessing the ratio of archaeol to caldarchaeol as a salinity proxy in highland lakes on the northeastern Qinghai-Tibetan Plateau[J]. ORGANIC GEOCHEMISTRY,2013,54:69-77.
APA Wang, HY .,Liu, WG .,Zhang, CLL .,Jiang, HC .,Dong, HL .,...&Wang, JX .(2013).Assessing the ratio of archaeol to caldarchaeol as a salinity proxy in highland lakes on the northeastern Qinghai-Tibetan Plateau.ORGANIC GEOCHEMISTRY,54,69-77.
MLA Wang, HY ,et al."Assessing the ratio of archaeol to caldarchaeol as a salinity proxy in highland lakes on the northeastern Qinghai-Tibetan Plateau".ORGANIC GEOCHEMISTRY 54(2013):69-77.
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