中国科学院青海盐湖研究所机构知识库
Advanced  
ISL OpenIR  > 青海盐湖研究所知识仓储  > 期刊论文
题名: Stable oxygen isotope of ostracods in recent sediments of Lake Gahai inthe Qaidam Basin, northwest China: The implications for paleoclimaticreconstruction
作者: Li, Xiangzhong ;  Liu, Weiguo ;  徐黎明
刊名: GLOBAL AND PLANETARY CHANGE
出版日期: 2012
卷号: 94-95, 期号:*, 页码:13-19
关键词: oxygen isotope ;  ostracod ;  precipitation ;  Lake Gahai
英文摘要: The oxygen isotopic composition of ostracod shells in lakes has been used as a useful indicator in palaeolimnological research and has provided some important contributions to the understanding of lacustrine systems. Usually, the oxygen isotopic compositions of ostracods from the lake sediments are interpreted as changes in effective precipitation, temperature and evaporation/input water ratio in a sub-arid or arid area. Here, we compare a 150-year-long oxygen-isotope record that was derived from ostracod carbonate from the sediments of Lake Gahai in the Qaidam Basin with meteorological data (precipitation) and tree-ring evidence for changing precipitation. Our results show that the oxygen isotopic compositions of ostracod shells are related to precipitation over the past 150 years. In general, increased precipitation accompanied a shift to less positive delta O-18 values in the lake water, and thus in the ostracod shells, whereas decreased precipitation coincided with the opposite in Lake Gahai over the past 150 yr. Therefore, we conclude that the oxygen isotopic compositions of ostracod shells can be used to indicate changes in precipitation over a short time scale in lake Gahai. (c) 2012 Elsevier B.V. All rights reserved. The oxygen isotopic composition of ostracod shells in lakes has been used as a useful indicator in palaeolimnological research and has provided some important contributions to the understanding of lacustrine systems. Usually, the oxygen isotopic compositions of ostracods from the lake sediments are interpreted as changes in effective precipitation, temperature and evaporation/input water ratio in a sub-arid or arid area. Here, we compare a 150-year-long oxygen-isotope record that was derived from ostracod carbonate from the sediments of Lake Gahai in the Qaidam Basin with meteorological data (precipitation) and tree-ring evidence for changing precipitation. Our results show that the oxygen isotopic compositions of ostracod shells are related to precipitation over the past 150 years. In general, increased precipitation accompanied a shift to less positive delta O-18 values in the lake water, and thus in the ostracod shells, whereas decreased precipitation coincided with the opposite in Lake Gahai over the past 150 yr. Therefore, we conclude that the oxygen isotopic compositions of ostracod shells can be used to indicate changes in precipitation over a short time scale in lake Gahai. (c) 2012 Elsevier B.V. All rights reserved.
收录类别: SCI
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2033
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
1-s2.0-S0921818112001178-main[1].pdf(800KB)----开放获取
by-nc-sa
View Download

Recommended Citation:
Li, Xiangzhong,Liu, Weiguo,Xu, Liming. Stable oxygen isotope of ostracods in recent sediments of Lake Gahai inthe Qaidam Basin, northwest China: The implications for paleoclimaticreconstruction[J]. GLOBAL AND PLANETARY CHANGE,2012,94-95(*):13-19.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Li, Xiangzhong]'s Articles
 [Liu, Weiguo]'s Articles
 [Xu, Liming]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Li, Xiangzhong]‘s Articles
 [Liu, Weiguo]‘s Articles
 [Xu, Liming]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 1-s2.0-S0921818112001178-main[1].pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院青海盐湖研究所 - Feedback
Powered by CSpace