Stable oxygen isotope of ostracods in recent sediments of Lake Gahai in the Qaidam Basin, northwest China: The implications for paleoclimatic reconstruction | |
Li, XZ (Li, Xiangzhong)[1]; Liu, WG (Liu, Weiguo)[1,2]; Xu, LM (Xu, Liming)[3] | |
2012-08-30 | |
发表期刊 | GLOBAL AND PLANETARY CHANGE |
卷号 | 94-95页码:13-15 |
文章类型 | 期刊论文 |
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. |
关键词 | Oxygen Isotope Ostracod Precipitation Lake Gahai |
DOI | 10.1016/j.gloplacha.2012.06.005 |
收录类别 | SCI ; EI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/10098 |
专题 | 加速器质谱中心 |
通讯作者 | Li, XZ (Li, Xiangzhong)[1] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, IEE, CAS, Xi'an, 710075, China; 2.School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; 3.Qinghai Institute of Salt Lakes, CAS, Xining, 810008, China |
推荐引用方式 GB/T 7714 | Li, XZ ,Liu, WG ,Xu, LM . Stable oxygen isotope of ostracods in recent sediments of Lake Gahai in the Qaidam Basin, northwest China: The implications for paleoclimatic reconstruction[J]. GLOBAL AND PLANETARY CHANGE,2012,94-95:13-15. |
APA | Li, XZ ,Liu, WG ,&Xu, LM .(2012).Stable oxygen isotope of ostracods in recent sediments of Lake Gahai in the Qaidam Basin, northwest China: The implications for paleoclimatic reconstruction.GLOBAL AND PLANETARY CHANGE,94-95,13-15. |
MLA | Li, XZ ,et al."Stable oxygen isotope of ostracods in recent sediments of Lake Gahai in the Qaidam Basin, northwest China: The implications for paleoclimatic reconstruction".GLOBAL AND PLANETARY CHANGE 94-95(2012):13-15. |
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Stable oxygen isotop(831KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
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