中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地球环境研究所
  3. 中国科学院地球环境研究所
  4. 加速器质谱中心
Postglacial floral and climate changes in southeastern China recorded by distributions of n-alkan-2-ones in the Dahu sediment-peat sequence

文献类型：期刊论文

作者Chen, Lin4; Zhou, Weijian3; Zhang, Yiming4; Zheng, Yanhong1; Huang, Xianyu2
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2020-01-15
卷号538页码:8
关键词Lipid Paleohydrology Paleovegetation Ketone Quaternary
ISSN号0031-0182
DOI10.1016/j.palaeo.2019.109448
通讯作者Huang, Xianyu(xyhuang@cug.edu.cn)
英文摘要Long-chain n-alkane-2-ones occur widely in lacustrine and peat depositional settings; however, their paleobotanical and paleoclimate implications are less understood, compared with their n-alkyl counterparts (n-alkanes, n-fatty acids). In this study, we have performed a molecular stratigraphic investigation of changes in the plant contributions and depositional conditions using n-alkan-2-ones in the Dahu lacustrine-peat sequence spanning the last 17 kyr. A series of n-alkan-2-ones ranging from C-23 to C-33 with a maximum at C-29 appears to be contributed by microbial oxidation of both n-alkanes and n-alkanoic acids. The values of the average chain length (ACL) and the ratios of mid-to long-chained n-alkan-2-ones display a trend comparable with the abundance of trees relative to herbs and ferns. In addition, the carbon predominance index (CPI) of n-alkan-2-ones varied in pace with lithology/paleoenvironment, with higher values seen in peat deposits. The alternating layers represent a succession of shallow lakes and peatlands that filled the depositional basin in response to paleoclimate changes between wetter and less wet conditions. The succession of paleohydrologic conditions is responsible for the variation of ketone CPI values in this peat-sediment sequence.
WOS关键词LOESS-PALEOSOL SEQUENCES ; N-ALKANE DISTRIBUTIONS ; HOLOCENE CLIMATE ; SOUTHERN CHINA ; ORGANIC-MATTER ; ALTAI MOUNTAINS ; VEGETATION ; BIOMARKERS ; RECONSTRUCTION ; POLLEN
资助项目National Natural Science Foundation of China[41830319] ; National Natural Science Foundation of China[41877317] ; National Natural Science Foundation of China[41572325] ; fundamental research funds for the central universities[CUGCJ1703] ; fundamental research funds for the central universities[CUGQY1902]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:000508751800012
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; fundamental research funds for the central universities
源URL[http://ir.ieecas.cn/handle/361006/12782]  
专题地球环境研究所_加速器质谱中心
通讯作者Huang, Xianyu
作者单位1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
2.China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Crit Zone Evolut, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.China Univ Geosci, Sch Earth Sci, Hubei Key Lab Crit Zone Evolut, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Lin,Zhou, Weijian,Zhang, Yiming,et al. Postglacial floral and climate changes in southeastern China recorded by distributions of n-alkan-2-ones in the Dahu sediment-peat sequence[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,538:8.
APA Chen, Lin,Zhou, Weijian,Zhang, Yiming,Zheng, Yanhong,&Huang, Xianyu.(2020).Postglacial floral and climate changes in southeastern China recorded by distributions of n-alkan-2-ones in the Dahu sediment-peat sequence.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,538,8.
MLA Chen, Lin,et al."Postglacial floral and climate changes in southeastern China recorded by distributions of n-alkan-2-ones in the Dahu sediment-peat sequence".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 538(2020):8.

入库方式： OAI收割

来源：地球环境研究所

浏览0
下载0
收藏0
其他版本

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。