华北草地生态群落下表土中长链正构烷烃单体氢同位素组成
查看参考文献51篇
|
文摘
|
为了查明单一生态系统下表土中高等植物来源长链正构烷烃单体氢同位素(δD_(n-alkanes))的变化特征,从华北张家口市万全县大麻坪玄武岩风化壳随机采集了12个表层土壤样品,用来分析其长链正构烷烃分子组成特征及其单体碳(δ~13_(Cn-alkanes))、氢同位素,同时分析了其总有机质碳同位素(TOC,δ~13C_(TOC))变化。结果表明δ~13CTOC和来源于陆生高等植物的4个代表性的占优势地位的长链正构烷烃(n-C_(27),n-C_(29),n-C_(31),n-C_(33))的δ~(13)C_(n-alkanes)在这12个样品中都非常稳定,仅有很小的变化幅度,这两类碳同位素数据均表明其上覆植被的光合作用类型构成非常均一,可以视为由纯C3草本植物构成。相应的这4个主要长链正构烷烃的δD_(n-alkanes)变化幅度比较大,整体而言,相对丰度越高的同族体分子,其δD_(n-alkanes)更为偏负,且其变化幅度更小。然而,这4个主要长链正构烷烃加权平均δD_(n-alkanes)值约30‰的变化幅度小于先前研究当中报道的同一地点不同现代陆生C3草本植物之间长链正构烷烃δD_(n-alkanes)值的变化幅度,甚至小于同一植物种长链正构烷烃δD_(n-alkanes)值的季节变化幅度。由于表土和沉积物中长链正构烷烃来源上的相似性,即它们都来源于多种植物的混合,因此,我们的结果对于沉积物,尤其是其有机质为原地植物来源的陆相沉积物的长链正构烷烃单体氢同位素组成的古气候、古环境、古水文信息的精确解译,具有一定的参考价值. |
|
来源
|
中国科学. 地球科学
,2011,41(12):1731-1742 【核心库】
|
|
关键词
|
C_3草地
;
表土
;
长链正构烷烃
;
单体氢同位素
|
|
地址
|
1.
兰州大学西部环境与气候变化研究院, 西部环境教育部重点实验室;;中国科学院边缘海地质重点实验室, 兰州, 730000
2.
中国科学院广州地球化学研究所, 中国科学院边缘海地质重点实验室, 兰州, 510640
3.
兰州大学西部环境与气候变化研究院, 西部环境教育部重点实验室, 兰州, 730000
|
|
语种
|
中文 |
|
ISSN
|
1674-7240 |
|
学科
|
畜牧、动物医学、狩猎、蚕、蜂 |
|
基金
|
国家自然科学基金创新研究群体项目
;
国家973计划
;
国家教育部科学技术研究重点项目
;
国家自然科学基金
|
|
文献收藏号
|
CSCD:4424041
|
参考文献 共
51
共3页
|
|
1.
Huang Y S. Large-scale hydrological change drove the late Miocene C4 plant expansion in the Himalayan foreland and Arabian Peninsula.
Geology,2007,35:531-534
|
CSCD被引
23
次
|
|
|
|
|
2.
Pagani M. Arctic hydrology during global warming at the Palaeocene/Eocene thermal maximum.
Nature,2006,442:671-675
|
CSCD被引
19
次
|
|
|
|
|
3.
Schefuss E. Climatic controls on central African hydrology during the past 20000 years.
Nature,2005,437:1003-1006
|
CSCD被引
23
次
|
|
|
|
|
4.
Jahren A H. The environmental water of the middle Eocene Arctic: Evidence from δD, δ18O and δ13C within specific compounds.
Palaeogeogr Palaeoclimatol Palaeoecol,2009,271:96-103
|
CSCD被引
4
次
|
|
|
|
|
5.
Liu W G. Compound specific D/H ratios and molecular distributions of higher plant leaf waxes as novel paleoenvironmental indicators in the Chinese Loess Plateau.
Org Geochem,2005,36:851-860
|
CSCD被引
39
次
|
|
|
|
|
6.
Seki O. Hydrogen isotopic ratios of plant wax n-alkanes in a peat bog deposited in northeast China during the last 16 kyr.
Org Geochem,2009,40:671-677
|
CSCD被引
23
次
|
|
|
|
|
7.
Xie S. Palaeoclimate records in compound-specific δD values of a lipid biomarker in ombrotrophic peat.
Org Geochem,2000,31:1053-1057
|
CSCD被引
44
次
|
|
|
|
|
8.
Xie S C. Molecular and isotopic stratigraphy in an ombrotrophic mire for paleoclimate reconstruction.
Geochim Cosmochim Acta,2004,68:2849-2862
|
CSCD被引
40
次
|
|
|
|
|
9.
Bi X H. Molecular and carbon and hydrogen isotopic composition of n-alkanes in plant leaf waxes.
Org Geochem,2005,36:1405-1417
|
CSCD被引
27
次
|
|
|
|
|
10.
Chikaraishi Y. Compound-specific δD-δ13C analyses of n-alkanes extracted from terrestrial and aquatic plants.
Phytochemistry,2003,63:361-371
|
CSCD被引
39
次
|
|
|
|
|
11.
Chikaraishi Y. Carbon and hydrogen isotope variation of plant biomarkers in a plant-soil system.
Chem Geol,2006,231:190-202
|
CSCD被引
19
次
|
|
|
|
|
12.
Hou J Z. Hydrogen isotopic variability in leaf waxes among terrestrial and aquatic plants around Blood Pond, Massachusetts (USA).
Org Geochem,2007,38:977-984
|
CSCD被引
23
次
|
|
|
|
|
13.
Krull E. Compound-specific δδ13C and δ2H analyses of plant and soil organic matter: A preliminary assessment of the effects of vegetation change on ecosystem hydrology.
Soil Biol Biochem,2006,38:3211-3221
|
CSCD被引
6
次
|
|
|
|
|
14.
Liu W G. Hydrogen isotopic compositions of n-alkanes from terrestrial plants correlate with their ecological life forms.
Oecologia,2006,150:330-338
|
CSCD被引
20
次
|
|
|
|
|
15.
Mugler I. Effect of lake evaporation on δD values of lacustrine n-alkanes: A comparison of Nam Co (Tibetan Plateau) and Holzmaar (Germany).
Org Geochem,2008,39:711-729
|
CSCD被引
31
次
|
|
|
|
|
16.
Sachse D. δD values of individual n-alkanes from terrestrial plants along a climatic gradient––Implications for the sedimentary biomarker record.
Org Geochem,2006,37:469-483
|
CSCD被引
48
次
|
|
|
|
|
17.
Sachse D. Significant seasonal variation in the hydrogen isotopic composition of leaf-wax lipids for two deciduous tree ecosystems (Fagus sylvativa and Acer pseudoplatanus).
Org Geochem,2009,40:732-742
|
CSCD被引
8
次
|
|
|
|
|
18.
Sessions A L. Seasonal changes in D/H fractionation accompanying lipid biosynthesis in Spartina alternflora.
Geochim Cosmochim Acta,2006,70:2153-2162
|
CSCD被引
18
次
|
|
|
|
|
19.
Smith F A. Influence of physiology and climate on δD of leaf wax n-alkanes from C3 and C4 grasses.
Geochim Cosmochim Acta,2006,70:1172-1187
|
CSCD被引
35
次
|
|
|
|
|
20.
Yang H. Molecular hydrogen isotope analysis of living and fossil plants––Metasequoia as an example.
Prog Nat Sci,2009,19:901-912
|
CSCD被引
2
次
|
|
|
|
|
了解气象卫星更多信息，请访问