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Variation in n-alkane delta D values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction
Yang, H (Yang, Hong)[1]; Liu, WG (Liu, Weiguo)[2,3]; Leng, Q (Leng, Qin)[1,4]; Hren, MT (Hren, Michael T.)[5]; Pagani, M (Pagani, Mark)[5]
2011-03-30
发表期刊ORGANIC GEOCHEMISTRY
卷号42期号:3页码:283-288
文章类型期刊论文
摘要

The molecular hydrogen isotope composition ((delta D) of leaf waxes from terrestrial plants is increasingly used to infer hydrological characteristics of ancient high latitude climates. Analysis of the hydrogen isotope composition of n-alkanes (delta D(n-alkane)) from a global dataset of individual plants growing at low and middle latitudes indicates that plant ecological life form is an important factor in determining the hydrogen isotope fractionation. However, environmental and biological controls of high latitudinal leaf wax delta D values are poorly understood because of a lack of delta D records from modern flora in these regions. We previously noticed smaller apparent hydrogen isotope fractionations between n-alkanes and environmental water (epsilon(alk-water)) in deciduous trees growing at high latitudes (> 59 degrees N; Liu, W.-G., Yang, H., 2008. Multiple controls for the variability of hydrogen isotopic compositions in higher plant n-alkanes from modern ecosystems. Global Change Biology 14,2166-2177.) To further examine these issues, we measured delta D(n-alkane) from a variety of plants that inhabit high latitude environments and added critically needed leaf wax delta D data from grass and herbs to the existing global delta D(n-alkane) database. Inclusion of these new data with the existing global dataset (n = 408) confirms plant ecological life form as an important control for leaf wax delta D variation for terrestrial plants living at high latitudes. Our results suggest that, while precipitation delta D is captured in these high latitude plants, physiological characters such as leaf area, venation pattern and hydraulic system, that enhance transpiration rate during summer growth, may impart delta D(n-alkane) differences among plants with different ecological life forms.

DOI10.1016/j.orggeochem.2011.01.006
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10320
专题加速器质谱中心
通讯作者Yang, H (Yang, Hong)[1]
作者单位1.Department of Science and Technology, College of Arts and Sciences, Bryant University, Smithfield, RI 02917, USA;
2.State Key Laboratory of Loess and Quaternary Geology, IEE, CAS, Xi’an 710075, PR China;
3.School of Human Settlement and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, PR China;
4.LPS, Nanjing Institute of Geology and Palaeontology, CAS, Nanjing 210008, PR China;
5.Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA
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Yang, H ,Liu, WG ,Leng, Q ,et al. Variation in n-alkane delta D values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction[J]. ORGANIC GEOCHEMISTRY,2011,42(3):283-288.
APA Yang, H ,Liu, WG ,Leng, Q ,Hren, MT ,&Pagani, M .(2011).Variation in n-alkane delta D values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction.ORGANIC GEOCHEMISTRY,42(3),283-288.
MLA Yang, H ,et al."Variation in n-alkane delta D values from terrestrial plants at high latitude: Implications for paleoclimate reconstruction".ORGANIC GEOCHEMISTRY 42.3(2011):283-288.
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