气候变化领域集成服务门户(CCPortal): Spatial variability and correlation of environmental proxies during the past 18,000 years among multiple cores from Lake Pumoyum Co, Tibet, China

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DOI	10.1007/s10933-008-9277-4
	Spatial variability and correlation of environmental proxies during the past 18,000 years among multiple cores from Lake Pumoyum Co, Tibet, China
	Wang, Junbo; Zhu, Liping; Nishimura, Mitsugu; Nakamura, Toshio; Ju, Jianting; Xie, Manping; Takahiro, Watanabe; Testsuya, Matsunaka
通讯作者	Zhu, LP (通讯作者)
发表日期	2009
ISSN	0921-2728
EISSN	1573-0417
起始页码	303
结束页码	315
卷号	42 期号:3
英文摘要	Multiple cores from Lake Pumoyum Co, southern Tibet, provide an improved understanding of the spatial distribution of lake sediments, and how well they represent the paleo-climate. Comparative study of these cores using AMS C-14 dating and environmental proxies clarified their relationships with environmental changes. Our work focused on understanding the spatial similarities among cores covering different time scales, and evaluating variations in sedimentary processes across sites. The four studied cores demonstrate different sedimentation rates, but environmental proxies help synchronize the timing of environmental variations. Sediment variables such as total organic carbon (TOC), inorganic carbon (IC), and grain size in different cores correlate well and corroborate changing trends over the past 10,000 cal years. Differences in sedimentation rates and facies among core sites probably result largely from differences in water depth. The core from the deepest site displays the highest average sedimentation rates and the highest accumulation rates of TOC, but lowest content of IC. Two cores from somewhat shallower sites have plant residues in their lower sections and record similar variations in both the number of layers and their depositional ages. Our results do not indicate any significant variation in sedimentation pattern or its related factors among the three sites. A single core from the deepest site could adequately represent the total lake environment over the time span covered. But cores from somewhat shallower sites might reveal important shifts in the environment over a longer time period.
关键词	SEDIMENTATION PATTERNS LEVEL CHANGES PLATEAU QINGHAI RECORD BASIN ACCUMULATION INDICATORS BAIKAL WATER
英文关键词	Lake sediments; Multi-cores; Spatial variability; Pumoyum Co; Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Limnology
WOS记录号	WOS:000269918300001
来源期刊	JOURNAL OF PALEOLIMNOLOGY
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/257708
推荐引用方式 GB/T 7714	Wang, Junbo,Zhu, Liping,Nishimura, Mitsugu,et al. Spatial variability and correlation of environmental proxies during the past 18,000 years among multiple cores from Lake Pumoyum Co, Tibet, China[J]. 中国科学院青藏高原研究所,2009,42(3).
APA	Wang, Junbo.,Zhu, Liping.,Nishimura, Mitsugu.,Nakamura, Toshio.,Ju, Jianting.,...&Testsuya, Matsunaka.(2009).Spatial variability and correlation of environmental proxies during the past 18,000 years among multiple cores from Lake Pumoyum Co, Tibet, China.JOURNAL OF PALEOLIMNOLOGY,42(3).
MLA	Wang, Junbo,et al."Spatial variability and correlation of environmental proxies during the past 18,000 years among multiple cores from Lake Pumoyum Co, Tibet, China".JOURNAL OF PALEOLIMNOLOGY 42.3(2009).