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Aquatic Species Dominate Organic Matter in Qinghai Lake during the Holocene: Evidence from Eolian Deposits around the Lake
Zeng, Fangming1; Liu, Xiangjun1; Li, Xiangzhong2; E, Chongyi3
2017-06-01
发表期刊JOURNAL OF EARTH SCIENCE
卷号28期号:3页码:484-491
文章类型Article
摘要Total organic carbon (TOC) in lake sediments and its stable carbon isotope (delta C-13(org)) are widely applied to investigate paleoenvironmental changes even though their implications are complicated and multi -explanatory. Organic geochemistry studies of lake sediments from Qinghai Lake have been investigated, but some interpretations are controversial. In this study, TOC of one Holocene eolian section and delta C-13(org) of three eolian sections were studied around Qinghai Lake. Results indicate that the TOC content in eolian deposits was low during the Early Holocene, and gradually increased to high values during the Middle and Late Holocene. The variation in TOC content of eolian deposits is different from that in the lacustrine sequence from Qinghai Lake during the Holocene. The delta C-13(org) values in the eolian sections were relatively stable, with oscillation amplitudes of similar to 4 parts per thousand (ranging from -25.8 parts per thousand to -22.1 parts per thousand), in contrast to similar to 10 parts per thousand variations in delta C-13(org) values (varying from -30 parts per thousand to -20 parts per thousand) in lacustrine sediments. Through comparison of TOC and delta C-13(org) values between eolian deposits and lacustrine sediments, we can confirm indications that the organic matter in Qinghai Lake sediments during the Holocene was primarily a contribution of the aquatic species in the lake. This is significant for understanding the origin of organic matter in lake sediments on the northeastern Qinghai -Tibetan Plateau and for paleoenvironmental inferences using such proxies.
关键词Qinghai Lake Total Organic Carbon (Toc) Organic Carbon Isotope (Delta C-13(Org)) Qinghai Tibetan Plateau
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]CHINESE LOESS PLATEAU ; TIBETAN PLATEAU ; LEVEL VARIATIONS ; LUMINESCENCE ; BASIN ; CHRONOLOGY ; EVOLUTION ; SEQUENCES ; SEDIMENTS ; ISOTOPES
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000402694100007
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6215
专题青海盐湖研究所知识仓储
盐湖地质与环境实验室
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.Qinghai Normal Univ, Key Lab Phys Geog & Environm Proc Qinghai Prov, Xining 810008, Peoples R China
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GB/T 7714
Zeng, Fangming,Liu, Xiangjun,Li, Xiangzhong,et al. Aquatic Species Dominate Organic Matter in Qinghai Lake during the Holocene: Evidence from Eolian Deposits around the Lake[J]. JOURNAL OF EARTH SCIENCE,2017,28(3):484-491.
APA Zeng, Fangming,Liu, Xiangjun,Li, Xiangzhong,&E, Chongyi.(2017).Aquatic Species Dominate Organic Matter in Qinghai Lake during the Holocene: Evidence from Eolian Deposits around the Lake.JOURNAL OF EARTH SCIENCE,28(3),484-491.
MLA Zeng, Fangming,et al."Aquatic Species Dominate Organic Matter in Qinghai Lake during the Holocene: Evidence from Eolian Deposits around the Lake".JOURNAL OF EARTH SCIENCE 28.3(2017):484-491.
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