气候变化领域集成服务门户(CCPortal): Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal

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DOI	10.2343/geochemj.42.331
	Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal
	Xia, Zhong-Huan; Xu, Bai-Qing; Muegler, I.; Wu, Guang-Jian; Gleixner, G.; Sachse, D.; Zhu, Li-Ping
通讯作者	Xu, BQ (通讯作者)
发表日期	2008
ISSN	0016-7002
EISSN	1880-5973
起始页码	331
结束页码	338
卷号	42 期号:4
英文摘要	Hydrogen isotope ratios were measured on terrigenous alkanes (n-C-25 to n-C-31) extracted from recent lake surface sediments from the climatically and environmentally distinct basins Qiangyong Glacier Lake, Yamzho Lake, Nam Co Lake, Keluke Lake and Xiao Qaidam Lake along a S-N transect in the Tibetan Plateau to explore the climatic implication of these biomarkers. delta D values of these n-alkanes are compared to that of precipitation spanning a wide range from -167 parts per thousand to -51 parts per thousand and clearly correlate with delta D values of meteoric water, indicating that terrigenous alkanes record the precipitation signal. The fractionation between precipitation and n-C-25, n-C-27 alkanes cover a range from -45 parts per thousand to -70 parts per thousand whilst that between precipitation and n-C-29, n-C-31, alkanes varies from -70 parts per thousand to -95 parts per thousand, both being fairly constant along the S-N Tibetan transect with the mean at -57 parts per thousand and -82 parts per thousand respectively. By comparison with the fractionation of -130 parts per thousand along the S-N European transect, it implies that the hydrogen isotopic fractionation between meteoric water and terrestrial n-alkanes along the Tibetan transect represent distinct character.
关键词	DELTA-D VALUES CLIMATE VARIABILITY TERRESTRIAL PLANTS LAKE-SEDIMENTS AQUATIC PLANTS D/H RATIOS LEAF WAXES LIPIDS WATER INDICATORS
英文关键词	n-alkanes; lacustrine sediment; terrestrial origin; hydrogen isotope ratio; precipitation; climate
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000261047900003
来源期刊	GEOCHEMICAL JOURNAL
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/257566
推荐引用方式 GB/T 7714	Xia, Zhong-Huan,Xu, Bai-Qing,Muegler, I.,et al. Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal[J]. 中国科学院青藏高原研究所,2008,42(4).
APA	Xia, Zhong-Huan.,Xu, Bai-Qing.,Muegler, I..,Wu, Guang-Jian.,Gleixner, G..,...&Zhu, Li-Ping.(2008).Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal.GEOCHEMICAL JOURNAL,42(4).
MLA	Xia, Zhong-Huan,et al."Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal".GEOCHEMICAL JOURNAL 42.4(2008).