Hydrogen isotopic variability in leaf waxes among terrestrial and aquatic plants around Blood Pond, Massachusetts (USA)

被引:196
作者
Hou, Juzhi [1 ]
D'Andrea, William J. [1 ]
MacDonald, Dana [1 ]
Huang, Yongsong [1 ]
机构
[1] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/j.orggeochem.2006.12.009
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Paleoclimatic interpretation of the hydrogen isotope ratios of plant leaf waxes extracted from sediments requires a thorough understanding of the factors controlling the isotopic ratios. Existing studies have found relatively small variability in hydrogen isotope fractionation among plants of different photosynthetic pathways (C-3, C-4 and CAM) and between gymnosperms and angiosperms. However, there has been no systematic study at a single site to determine how leaf wax hydrogen isotope (D/H) ratios differ in different plant types under the same precipitation and environmental regime. Such data are nevertheless crucial for understanding the impact of past vegetation changes on the sedimentary hydrogen isotope records of leaf waxes. Here, we present a study of D/H ratios of leaf waxes from 48 species in seven types of terrestrial and aquatic C-3 plants around Blood Pond, Dudley, Massachusetts, USA. The delta D values of leaf waxes differ by as much as 70 parts per thousand for different plant types, with those from trees and ferns having the highest values and those from grasses having the lowest values. The large isotopic variation indicates that the apparent hydrogen isotopic fractionation between leaf waxes and precipitation is riot constant for different plant types. Our results indicate that inferring precipitation D/H ratios on the basis of sedimentary leaf waxes is only viable when significant vegetation change is absent or can be accounted for isotopically. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:977 / 984
页数:8
相关论文
共 23 条
[1]  
Barnes CJ, 1998, ISOTOPE TRACERS IN CATCHMENT HYDROLOGY, P137
[2]   Molecular and carbon and hydrogen isotopic composition of n-alkanes in plant leaf waxes [J].
Bi, XH ;
Sheng, GY ;
Liu, XH ;
Li, C ;
Fu, JM .
ORGANIC GEOCHEMISTRY, 2005, 36 (10) :1405-1417
[3]   Interpolating the isotopic composition of modern meteoric precipitation [J].
Bowen, GJ ;
Revenaugh, J .
WATER RESOURCES RESEARCH, 2003, 39 (10) :SWC91-SWC913
[4]   Hydrogen isotopic fractionations during desaturation and elongation associated with polyunsaturated fatty acid biosynthesis in marine macroalgae [J].
Chikaraishi, Y ;
Suzuki, Y ;
Naraoka, H .
PHYTOCHEMISTRY, 2004, 65 (15) :2293-2300
[5]   Compound-specific δD-δ13C analyses of n-alkanes extracted from terrestrial and aquatic plants [J].
Chikaraishi, Y ;
Naraoka, H .
PHYTOCHEMISTRY, 2003, 63 (03) :361-371
[6]   Stable hydrogen isotopic composition of hydrocarbons in torbanites (Late Carboniferous to Late Permian) deposited under various climatic conditions [J].
Dawson, D ;
Grice, K ;
Wang, SX ;
Alexander, R ;
Radke, J .
ORGANIC GEOCHEMISTRY, 2004, 35 (02) :189-197
[7]   CARBON ISOTOPE DISCRIMINATION AND PHOTOSYNTHESIS [J].
FARQUHAR, GD ;
EHLERINGER, JR ;
HUBICK, KT .
ANNUAL REVIEW OF PLANT PHYSIOLOGY AND PLANT MOLECULAR BIOLOGY, 1989, 40 :503-537
[8]   STABLE OXYGEN AND HYDROGEN ISOTOPE COMPOSITION OF LEAF WATER IN C3 AND C4 PLANT-SPECIES UNDER FIELD CONDITIONS [J].
FLANAGAN, LB ;
BAIN, JF ;
EHLERINGER, JR .
OECOLOGIA, 1991, 88 (03) :394-400
[9]   Postglacial climate reconstruction based on compound-specific D/H ratios of fatty acids from Blood Pond, New England [J].
Hou, JZ ;
Huang, YS ;
Wang, Y ;
Shuman, B ;
Oswald, WW ;
Faison, E ;
Foster, DR .
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, 2006, 7
[10]   Hydrogen isotope ratios of individual lipids in lake sediments as novel tracers of climatic and environmental change: a surface sediment test [J].
Huang, YS ;
Shuman, B ;
Wang, Y ;
Webb, T .
JOURNAL OF PALEOLIMNOLOGY, 2004, 31 (03) :363-375