气候变化领域集成服务门户(CCPortal): Leaf wax n-alkane carbon isotope values vary among major terrestrial plant groups: Different responses to precipitation amount and temperature, and implications for paleoenvironmental reconstruction

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DOI	10.1016/j.earscirev.2020.103081
	Leaf wax n-alkane carbon isotope values vary among major terrestrial plant groups: Different responses to precipitation amount and temperature, and implications for paleoenvironmental reconstruction
	Liu J.; An Z.
发表日期	2020
ISSN	00128252
卷号	202
英文摘要	Studies focused on field measurements have been conducted to investigate how leaf wax n-alkane δ13C values vary among photosynthetic pathways (C3 vs. C4) or plant types (dicots, monocots, gymnosperms, magnoliids), and how n-alkane δ13C values respond to climate factors (precipitation, temperature). However, a systematic global analysis of plant n-alkane δ13C values with respect to major plant groups is still lacking, and the corresponding mechanism remains unknown. In this study, we compiled globally published n-alkanes δ13C data in modern plants. We find significantly negative correlations between δ13Cwt values and mean annual precipitation (MAP) for C3 plants (R2 = 0.30; p < .05), dicots (R2 = 0.28; p < .05) and magnoliids (R2 = 0.55; p < .05), but non-significant correlation between δ13Cwt values and MAP for C4 plants (R2 = 0.08; p = .12) or monocots (R2 = 0.01; p = .89). However, there are significantly positive correlations between δ13Cwt values and mean annual temperature (MAT) in C4 plants (R2 = 0.33; p < .05) and monocots (R2 = 0.35; p < .05), instead of weak correlations in C3 plants (R2 = 0.09; p < .05), dicots (R2 = 0.03; p < .05) and gymnosperms (R2 = 0.06; p = .06). These results indicate that n-alkane δ13C values in C3 dicots have more potential for paleoprecipitation reconstruction, while those in C4 monocots are more likely to indicate paleotemperature changes. Our study supports use of leaf wax n-alkane δ13C values to gain information about paleoprecipitation and paleotemperature, but only in an appropriate paleoecological context © 2020 Elsevier B.V.
关键词	Global scale Leaf wax n-alkane δ13C Paleoenvironmental reconstruction Plant groups Precipitation Temperature
英文关键词	air temperature; alkane; carbon isotope; leaf; paleoecology; paleoenvironment; paleotemperature; photosynthesis; precipitation (climatology); reconstruction; wax; Dicotyledoneae; Gymnospermae; Liliopsida; magnoliids
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203787
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China
推荐引用方式 GB/T 7714	Liu J.,An Z.. Leaf wax n-alkane carbon isotope values vary among major terrestrial plant groups: Different responses to precipitation amount and temperature, and implications for paleoenvironmental reconstruction[J],2020,202.
APA	Liu J.,&An Z..(2020).Leaf wax n-alkane carbon isotope values vary among major terrestrial plant groups: Different responses to precipitation amount and temperature, and implications for paleoenvironmental reconstruction.Earth Science Reviews,202.
MLA	Liu J.,et al."Leaf wax n-alkane carbon isotope values vary among major terrestrial plant groups: Different responses to precipitation amount and temperature, and implications for paleoenvironmental reconstruction".Earth Science Reviews 202(2020).