Seasonality of the altitude effect on leaf wax n-alkane distributions, hydrogen and carbon isotopes along an arid transect in the Qinling Mountains

doi:10.1016/j.scitotenv.2021.146272

IEECAS OpenIR > 古环境研究室

	Seasonality of the altitude effect on leaf wax n-alkane distributions, hydrogen and carbon isotopes along an arid transect in the Qinling Mountains
	Liu, Jinzhao 1,2
通讯作者	Liu, Jinzhao(liujinzhao@ieecas.cn)
	2021-07-15
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	778 页码:9
摘要	Reconstructing paleoelevation allows the temporal evolution of biogeochemical processes and hydroclimate regimes to be understood and quantified. A dual-isotope biomarker of clumped hydrogen and carbon isotopes of leaf wax n-alkanes was recently proposed in humid tropical forests, and it was proven to be superior to a single-isotope proxy that was previously reported. However, it remains unknown whether the dual-isotope biomarker is suitable in arid conditions. The present study investigated leaf wax n-alkane distribution, hydrogen (delta H-2(wax)) and carbon (delta C-13(wax)) isotopes in terrestrial plants along an arid mountainous transect. We found that the effects of seasonality on n-alkane distribution, delta H-2(wax) and delta C-13(wax) were minimal for all species (p > 0.05), and that species-specific delta H-2(wax) values remained almost unchanged for most species, in contrast to delta C-13(wax) values. Significant correlations between altitude and delta H-2(wax) values (R-2 = 0.54, 0.58, and 0.75 for spring, summer, and autumn, respectively), instead of delta C-13(wax) values (R-2 = 0.08, 0.43, and 0.12 with p = 0.24, 0.01, and 0.19 for spring, summer, and autumn, respectively), were observed, suggesting that delta H-2(wax) values, but not delta C-13(wax) values, can be reliably used as a proxy for reconstructing paleoelevation in arid conditions. Therefore, it will be necessary to identify other proxies to supplement delta H-2(wax) values under a dual-isotope approach in future research. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Altitude Leaf wax hydrogen isotope Leaf wax carbon isotope Paleoelevation
DOI	10.1016/j.scitotenv.2021.146272
关键词[WOS]	DELTA-D VALUES ; DIALKYL GLYCEROL TETRAETHER ; TIBETAN PLATEAU ; PLANTS IMPLICATIONS ; TERRESTRIAL ; SOIL ; PRECIPITATION ; LIPIDS ; DETERMINANTS ; BIOMARKERS
收录类别	SCI ; SCI
语种	英语
资助项目	Chinese Academy of Sciences[ZDBS-LY-DQC033] ; Chinese Academy of Sciences[XAB2019B02] ; National Natural Science Foundation of China[42073017]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	Chinese Academy of Sciences ; National Natural Science Foundation of China
WOS类目	Environmental Sciences
WOS记录号	WOS:000655712300016
出版者	ELSEVIER
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16721
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Liu, Jinzhao
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jinzhao. Seasonality of the altitude effect on leaf wax n-alkane distributions, hydrogen and carbon isotopes along an arid transect in the Qinling Mountains[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,778:9.
APA	Liu, Jinzhao.(2021).Seasonality of the altitude effect on leaf wax n-alkane distributions, hydrogen and carbon isotopes along an arid transect in the Qinling Mountains.SCIENCE OF THE TOTAL ENVIRONMENT,778,9.
MLA	Liu, Jinzhao."Seasonality of the altitude effect on leaf wax n-alkane distributions, hydrogen and carbon isotopes along an arid transect in the Qinling Mountains".SCIENCE OF THE TOTAL ENVIRONMENT 778(2021):9.