干旱区生态环境知识资源中心(Arid): Leaf Waxes and Hemicelluloses in Topsoils Reflect the delta H-2 and delta O-18 Isotopic Composition of Precipitation in Mongolia

Arid

DOI	10.3389/feart.2020.00343
	Leaf Waxes and Hemicelluloses in Topsoils Reflect the delta H-2 and delta O-18 Isotopic Composition of Precipitation in Mongolia
	Struck, Julian; Bliedtner, Marcel; Strobel, Paul; Bittner, Lucas; Bazarradnaa, Enkhtuya; Andreeva, Darima; Zech, Wolfgang; Glaser, Bruno; Zech, Michael; Zech, Roland
通讯作者	Struck, J
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2020
卷号	8
英文摘要	Compound-specific hydrogen and oxygen isotope analyzes on leaf wax-derivedn-alkanes (delta H-2(n-alkane)) and the hemicellulose-derived sugar arabinose (delta O-18(ara)) are valuable, innovative tools for paleohydrological reconstructions. Previous calibration studies have revealed that delta(2)H(n-alkane)and delta(18)O(ara)reflect the isotopic composition of precipitation, but - depending on the region - may be strongly modulated by evapotranspirative enrichment. Since no calibration studies exist for semi-arid and arid Mongolia so far, we have analyzed delta(2)H(n-alkane)and delta(18)O(ara)in topsoils collected along a transect through Mongolia, and we compared these values with the isotopic composition of precipitation (delta(2)H(p-WM)and delta O-18(p-WM), modeled data) and various climate parameters. delta(2)H(n-alkane)and delta(18)O(ara)are more positive in the arid south-eastern part of our transect, which reflects the fact that also the precipitation is more enriched in(2)H and(18)O along this part of the transect. The apparent fractionation epsilon(app), i.e., the isotopic difference between precipitation and the investigated compounds, shows no strong correlation with climate along the transect (epsilon(2H n-C29/p)= -129 +/- 14 parts per thousand, epsilon(2H n-C31/p)= -146 +/- 14 parts per thousand, and epsilon(18O ara/p)= +41 +/- 2 parts per thousand). Our results suggest that delta(2)H(n-alkane)and delta(18)O(ara)in topsoils from Mongolia reflect the isotopic composition of precipitation and are not strongly modulated by climate. Correlation with the isotopic composition of precipitation has root-mean-square errors of 13.4 parts per thousand for delta H-2(n-C29), 12.6 for delta H-2(n-C31), and 1.2 parts per thousand for delta O-18(ara), so our findings corroborate the great potential of compound-specific delta(2)H(n-alkane)and delta(18)O(ara)analyzes for paleohydrological research in Mongolia.
英文关键词	biomarkers n-alkanes sugars compound-specific isotopes apparent fractionation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000574615600001
WOS关键词	N-ALKANES ; D VALUES ; STABLE-ISOTOPES ; D/H RATIOS ; LIPID BIOMARKERS ; O-18 ENRICHMENT ; ORGANIC-MATTER ; HIGHER-PLANTS ; SOURCE WATER ; HYDROGEN
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326603
作者单位	[Struck, Julian; Bliedtner, Marcel; Strobel, Paul; Zech, Roland] Friedrich Schiller Univ Jena, Inst Geog, Jena, Germany; [Bittner, Lucas; Zech, Michael] Tech Univ Dresden, Inst Geog, Heisenberg Chair Phys Geog Focus Paleoenvironm Re, Dresden, Germany; [Bittner, Lucas; Glaser, Bruno] Martin Luther Univ Halle Wittenberg, Inst Agron & Nutr Sci, Soil Biogeochem, Halle, Saale, Germany; [Bazarradnaa, Enkhtuya] Mongolian Univ Life Sci, Inst Plant & Agr Sci, Ulaanbaatar, Mongolia; [Andreeva, Darima] Russian Acad Sci RAS, Inst Gen & Expt Biol, Ulan Ude, Russia; [Zech, Wolfgang] Univ Bayreuth, Inst Soil Sci & Soil Geog, Bayreuth, Germany
推荐引用方式 GB/T 7714	Struck, Julian,Bliedtner, Marcel,Strobel, Paul,et al. Leaf Waxes and Hemicelluloses in Topsoils Reflect the delta H-2 and delta O-18 Isotopic Composition of Precipitation in Mongolia[J],2020,8.
APA	Struck, Julian.,Bliedtner, Marcel.,Strobel, Paul.,Bittner, Lucas.,Bazarradnaa, Enkhtuya.,...&Zech, Roland.(2020).Leaf Waxes and Hemicelluloses in Topsoils Reflect the delta H-2 and delta O-18 Isotopic Composition of Precipitation in Mongolia.FRONTIERS IN EARTH SCIENCE,8.
MLA	Struck, Julian,et al."Leaf Waxes and Hemicelluloses in Topsoils Reflect the delta H-2 and delta O-18 Isotopic Composition of Precipitation in Mongolia".FRONTIERS IN EARTH SCIENCE 8(2020).