DOI: 10.1016/j.earscirev.2020.103081
论文题名: 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
作者: Liu J. ; An Z.
刊名: Earth-Science Reviews
ISSN: 128252
出版年: 2020
卷: 202 语种: 英语
英文关键词: Global scale
; Leaf wax n-alkane δ13C
; Paleoenvironmental reconstruction
; Plant groups
; Precipitation
; Temperature
Scopus关键词: air temperature
; alkane
; carbon isotope
; leaf
; paleoecology
; paleoenvironment
; paleotemperature
; photosynthesis
; precipitation (climatology)
; reconstruction
; wax
; Dicotyledoneae
; Gymnospermae
; Liliopsida
; magnoliids
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159006
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Earth-Science Reviews,2020-01-01,202