ITPCAS OpenIR  > 图书馆
Variable apparent hydrogen isotopic fractionation between sedimentary n-alkanes and precipitation on the Tibetan Plateau
Hou, JZ (Hou, Juzhi)1,2; Tian, Q (Tian, Qian)1,2; Wang, MD (Wang, Mingda)1
Source PublicationORGANIC GEOCHEMISTRY
2018-08-01
Volume122Issue:0Pages:78-86
DOI10.1016/j.orggeochem.2018.05.011
Abstract

The hydrogen isotope ratio values of sedimentary leaf wax n-alkanes (delta D-wax) have been considered a reliable proxy for precipitation isotope ratios (delta D-P) across various transects on a global basis. Records of delta D-wax have been used to infer past changes in hydrology, climate and altimetry, assuming nearly constant apparent hydrogen isotopic fractionation (epsilon(wax-P)) between sedimentary leaf wax components and precipitation. Here, we present the results of an analysis of delta D-wax values from the surface sediments of 22 lakes across a precipitation and vegetation gradient on the Tibetan Plateau. The delta D-wax values correlated significantly with mean annual precipitation delta D (r 0.90) and summer precipitation delta D (r 0.91), suggesting that delta D-wax can record delta D-P in very dry regions. However, epsilon(wax-P) varies with annual precipitation as well as with relative humidity. Calculation using Craig-Gordon isotope models showed that the variable epsilon(wax-P) values likely resulted from intensive soil evaporation and plant evapotranspiration in this relatively arid region. This implies that variable isotopic fractionation should be taken into consideration when reconstructing paleohydrology, paleoclimate and paleoaltimetry. (C) 2018 Elsevier Ltd. All rights reserved.

Subject Area地理学
WOS IDWOS:000437806200007
Language英语
Indexed BySCIE
KeywordDelta-d Values Plant Leaf Wax Terrestrial Plants African Hydrology Surface Sediment Water Ratios Record Gradients Climate
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
Cooperation Status国内
ISSN0146-6380
Department环境变化与地表过程重点实验室
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8585
Collection图书馆
Corresponding AuthorHou, JZ (Hou, Juzhi)
Affiliation1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
2.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Hou, JZ ,Tian, Q ,Wang, MD . Variable apparent hydrogen isotopic fractionation between sedimentary n-alkanes and precipitation on the Tibetan Plateau[J]. ORGANIC GEOCHEMISTRY,2018,122(0):78-86.
APA Hou, JZ ,Tian, Q ,&Wang, MD .(2018).Variable apparent hydrogen isotopic fractionation between sedimentary n-alkanes and precipitation on the Tibetan Plateau.ORGANIC GEOCHEMISTRY,122(0),78-86.
MLA Hou, JZ ,et al."Variable apparent hydrogen isotopic fractionation between sedimentary n-alkanes and precipitation on the Tibetan Plateau".ORGANIC GEOCHEMISTRY 122.0(2018):78-86.
Files in This Item:
File Name/Size DocType Version Access License
2018125.pdf(1164KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Hou, JZ (Hou, Juzhi)]'s Articles
[Tian, Q (Tian, Qian)]'s Articles
[Wang, MD (Wang, Mingda)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Hou, JZ (Hou, Juzhi)]'s Articles
[Tian, Q (Tian, Qian)]'s Articles
[Wang, MD (Wang, Mingda)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Hou, JZ (Hou, Juzhi)]'s Articles
[Tian, Q (Tian, Qian)]'s Articles
[Wang, MD (Wang, Mingda)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2018125.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.