Relationships between Source Inputs and Lipid Geochemistry of Lake Sediments on the Northern Tibetan Plateau, China
文献类型：期刊论文
| 作者 | Wu Chenjun; Tuo Jincai; Chen Ru; Zhang Mingfeng; Liu Yan |
| 刊名 | GEOMICROBIOLOGY JOURNAL
 |
| 出版日期 | 2020-05-11 |
| 页码 | 14 |
| ISSN号 | 0149-0451 |
| 关键词 | Tibetan Plateau lipid geochemistry fatty acids n-alkanes carbon isotopic composition |
| DOI | 10.1080/01490451.2020.1764674 |
| 英文摘要 | Surface sediment samples were collected along the margins of Lakes Dachaidan, Xiaochaidan, Gahai (Delinha), Chaka, Gahai, and Qinghai, and from the Jinyingtan peat deposit, to study the lipid geochemistry of sediments on the Tibetan Plateau, China. TOC contents of the lake sediments varied in different saline lakes, with higher values in Lakes Qinghai and Gahai, which may be related to low salinity and abundant aquatic organisms. Fatty acids and n-alkanes were the two most abundant lipid constituents. Fatty acids were dominated by short-chain, indicating they were mainly from aquatic organisms, algae and bacteria organic matter. n-Alkanes were dominated by mid-chain and long-chain n-alkanes, and were derived mainly from aquatic macrophytes and terrestrial plants. The carbon isotopic compositions of short-chain, branched, unsaturated and cyclic fatty acids, and short-chain n-alkanes show an increasing trend in lake sediment samples from less saline lakes to more saline lakes. In less saline lakes, delta 13C values of algae-sourced compounds show relatively enriched 12C, because of higher primary production and CO2 assimilation. The delta 13C values of long-chain fatty acids and mid-chian/long-chain n-alkanes are positively correlated and show no obvious change from west to east, indicating similar macrophytes and terrestrial higher plants input in the studied samples. |
| WOS关键词 | CARBON ISOTOPIC COMPOSITION ; FATTY-ACID-COMPOSITION ; ORGANIC-MATTER ; N-ALKANES ; ENVIRONMENTAL-CHANGES ; LACUSTRINE SEDIMENTS ; SURFACE SEDIMENTS ; BIOMARKERS ; QINGHAI ; ORIGIN |
| 资助项目 | National Natural Science Foundation of China[41672127] ; National Natural Science Foundation of China[41602151] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| 出版者 | TAYLOR & FRANCIS INC |
| WOS记录号 | WOS:000533759700001 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96720]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Tuo Jincai |
| 作者单位 | Chinese Acad Sci, Key Lab Petr Resources, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu Chenjun,Tuo Jincai,Chen Ru,et al. Relationships between Source Inputs and Lipid Geochemistry of Lake Sediments on the Northern Tibetan Plateau, China[J]. GEOMICROBIOLOGY JOURNAL,2020:14. |
| APA | Wu Chenjun,Tuo Jincai,Chen Ru,Zhang Mingfeng,&Liu Yan.(2020).Relationships between Source Inputs and Lipid Geochemistry of Lake Sediments on the Northern Tibetan Plateau, China.GEOMICROBIOLOGY JOURNAL,14. |
| MLA | Wu Chenjun,et al."Relationships between Source Inputs and Lipid Geochemistry of Lake Sediments on the Northern Tibetan Plateau, China".GEOMICROBIOLOGY JOURNAL (2020):14. |
入库方式： OAI收割
来源：地质与地球物理研究所
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