气候变化领域集成服务门户(CCPortal): Variability of the C-14 reservoir effects in Lake Tangra Yumco, Central Tibet (China), determined from recent sedimentation rates and dating of plant fossils

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DOI	10.1016/j.quaint.2015.10.084
	Variability of the C-14 reservoir effects in Lake Tangra Yumco, Central Tibet (China), determined from recent sedimentation rates and dating of plant fossils
	Wang, Junbo; Zhu, Liping; Wang, Yong; Peng, Ping; Ma, Qingfeng; Haberzettl, Torsten; Kasper, Thomas; Matsunaka, Testsuya; Nakamura, Toshio
通讯作者	Wang, JB (通讯作者)
发表日期	2017
ISSN	1040-6182
EISSN	1873-4553
起始页码	3
结束页码	11
卷号	430
英文摘要	Sediments from lakes provide one of the most important archives for past environmental changes on the Tibetan Plateau. The recent sedimentation rate of modern lakes is widely used as an independent method to calibrate C-14-derived chronologies because C-14 values are often affected by a reservoir effect. Terrestrial plant residues in lake sediments are believed to be the ideal material for C-14 dating because they normally provide the true ages of the sediments. In this study, we present the spatial and temporal variations in modern sedimentation rates over the past similar to 150 years and evaluate the reservoir effects of C-14 ages determined from bulk sediments and plant residues from Lake Tangra Yumco on the central Tibetan Plateau. The results show that ages determined from plant residues are systematically younger than those of the bulk sediments. However, the reservoir effects associated with the bulk sediments are much more constant than those of the plant residues, highlighting the complicated composition of these macro-remains and the fact that they might not be the best dating materials in Tangra Yumco, especially in southern part. A similar reservoir effect of similar to 2200 years is observed in the southern and northern parts of Tangra Yumco, based on the dating of modern surface sediments and aquatic plants. This study demonstrates the complexity of the reservoir effect in a closed lake on the Tibetan Plateau, and careful consideration must be paid to the use of different approaches to date different materials in order to establish a reliable chronology. (C) 2015 Elsevier Ltd and INQUA. All rights reserved.
关键词	ENVIRONMENTAL-CHANGES NAM-CO LACUSTRINE SEDIMENTS SOUTHERN PATAGONIA PLATEAU RADIOCARBON LUMINESCENCE CHRONOLOGY RECORDS AGE
英文关键词	Modern sedimentation rate; Radiocarbon dating; Reservoir effect; Plant residues; Lake sediment; Tibetan Plateau
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000397933600002
来源期刊	QUATERNARY INTERNATIONAL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259045
推荐引用方式 GB/T 7714	Wang, Junbo,Zhu, Liping,Wang, Yong,et al. Variability of the C-14 reservoir effects in Lake Tangra Yumco, Central Tibet (China), determined from recent sedimentation rates and dating of plant fossils[J]. 中国科学院青藏高原研究所,2017,430.
APA	Wang, Junbo.,Zhu, Liping.,Wang, Yong.,Peng, Ping.,Ma, Qingfeng.,...&Nakamura, Toshio.(2017).Variability of the C-14 reservoir effects in Lake Tangra Yumco, Central Tibet (China), determined from recent sedimentation rates and dating of plant fossils.QUATERNARY INTERNATIONAL,430.
MLA	Wang, Junbo,et al."Variability of the C-14 reservoir effects in Lake Tangra Yumco, Central Tibet (China), determined from recent sedimentation rates and dating of plant fossils".QUATERNARY INTERNATIONAL 430(2017).