Concentration and distributions of fatty acids in algae, submerged plants and terrestrial plants from the northeastern Tibetan Plateau
Liu, Weiguo2; Liu, Hu1,2
刊名ORGANIC GEOCHEMISTRY
2017-11-01
卷号113期号:2017页码:17-26
关键词Fatty Acids Terrestrial Plants Submerged Plants Algae Tibetan Plateau
DOI10.1016/j.orggeochem.2017.08.008
文献子类Article
英文摘要We systematically investigated the concentration and distributions of saturated fatty acids (FAs) in 66 submerged plants (including 48 Potamogeton, 7 Myriophyllum and 11 Ruppia), 59 algae (including 26 Chara, 20 Cladophora and 13 Spirogyra) and 32 terrigenous plants from 18 lakes on the northeastern Tibetan Plateau. The results indicate that C-14-C-32 FAs in algae, submerged plants and terrigenous plants were dominated mainly by C-16 and C-20-C-32. FAs in algae and submerged plants were predominantly C-24, but also contained a relatively high abundance of C-26. The submerged plants had high C-26-C-32 concentration, with average values of 216 lg/g for Potamogeton, 52 lg/g for Myriophyllum and 134 lg/g for Ruppia, close to those of terrigenous plants (avg. 161 lg/g). Algae exhibited low C-26-C-32 FA concentration, with mean values of 7 lg/g for Chara, 8 lg/g for Cladophora and 18 lg/g for Spirogyra. The C-26-C-32 FAs in algae and submerged plants accounted for a large proportion of C-20-C-32, yielding average ratios (C-26-C-32 vs. C-20-C-32) of 33, 35, 31, 15, 19 and 23% for Potamogeton, Myriophyllum, Ruppia, Chara, Cladophora and Spirogyra, respectively. Therefore, the contribution of submerged plant C-26-C-32 FAs to lake sediments should be considered due to their high concentration, whereas the influence of algae was minor. Meanwhile, by comparing the values of average chain length (ACL), alga/terrigenous ratio (ATR) and submerged/terrestrial ratio (STR), we found that ACL14-32 and ATR could be used to distinguish algal FAs from those of other plants and that STR could be used to differentiate FA sources from submerged and terrestrial plants. Thus, we suggest that using specific chain lengths to determine source inputs is not adequate when applying sedimentary FAs for paleoclimatic reconstruction, while ACL 14-32, ATR and STR may aid in determining FA sources in sedimentary records. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词N-ALKYL LIPIDS ; LAKE DONGGI CONA ; ORGANIC GEOCHEMISTRY ; LACUSTRINE SEDIMENTS ; ISOTOPIC COMPOSITION ; CLIMATE VARIABILITY ; HYDROGEN ISOTOPES ; ALKANOIC ACIDS ; CUTICULAR WAX ; EAST-AFRICA
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000414812800003
内容类型期刊论文
源URL[http://ir.ieecas.cn/handle/361006/5389]  
专题地球环境研究所_加速器质谱中心
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714
Liu, Weiguo,Liu, Hu. Concentration and distributions of fatty acids in algae, submerged plants and terrestrial plants from the northeastern Tibetan Plateau[J]. ORGANIC GEOCHEMISTRY,2017,113(2017):17-26.
APA Liu, Weiguo,&Liu, Hu.(2017).Concentration and distributions of fatty acids in algae, submerged plants and terrestrial plants from the northeastern Tibetan Plateau.ORGANIC GEOCHEMISTRY,113(2017),17-26.
MLA Liu, Weiguo,et al."Concentration and distributions of fatty acids in algae, submerged plants and terrestrial plants from the northeastern Tibetan Plateau".ORGANIC GEOCHEMISTRY 113.2017(2017):17-26.
个性服务
查看访问统计
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。


©版权所有 ©2017 CSpace - Powered by CSpace