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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
Source PublicationJOURNAL OF EARTH SCIENCE
Volume28Issue:3Pages:484-491
SubtypeArticle
AbstractTotal 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.
KeywordQinghai Lake Total Organic Carbon (Toc) Organic Carbon Isotope (Delta C-13(Org)) Qinghai Tibetan Plateau
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordCHINESE LOESS PLATEAU ; TIBETAN PLATEAU ; LEVEL VARIATIONS ; LUMINESCENCE ; BASIN ; CHRONOLOGY ; EVOLUTION ; SEQUENCES ; SEDIMENTS ; ISOTOPES
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000402694100007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6215
Collection青海盐湖研究所知识仓储
盐湖地质与环境实验室
Affiliation1.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
Recommended Citation
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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