干旱区生态环境知识资源中心(Arid): A first Holocene leaf wax isotope-based paleoclimate record from the semi-humid to semi-arid south-eastern Caucasian lowlands

Arid

DOI	10.1002/jqs.3210
	A first Holocene leaf wax isotope-based paleoclimate record from the semi-humid to semi-arid south-eastern Caucasian lowlands
	Bliedtner, Marcel; Zech, Roland; Zech, Jana; Schaefer, Imke; von Suchodoletz, Hans
通讯作者	Bliedtner, M
来源期刊	JOURNAL OF QUATERNARY SCIENCE
ISSN	0267-8179
EISSN	1099-1417
出版年	2020
卷号	35 期号:5 页码:625-633
英文摘要	The Holocene paleoclimate of the Caucasus region is rather complex and not yet well understood: while existing studies are mainly based on pollen records from high-altitude and humid lowland regions, no records are available from the semi-humid to semi-arid south-eastern Caucasian lowlands. Therefore, this study investigated compound-specific delta H-2 and delta C-13 isotopes of leaf wax biomarkers from Holocene floodplain soils in eastern Georgia. Our results show that the leaf wax delta H-2 signal from the paleosols mostly reflects changes in the moisture source and its isotopic composition. Depleted delta H-2 values before similar to 8 cal ka bp change towards enriched values after similar to 5 cal ka bp and become again depleted after similar to 1.6 cal ka bp. This trend could be caused by Holocene changes of the isotopic compositions of the Black and eastern Mediterranean Sea, and/or by varying contribution of both moisture sources linked with the North Atlantic Oscillation. The leaf wax delta C-13 signal from the paleosols directly indicates varying local water availability and drought stress. Depleted delta C-13 values before similar to 8 and after similar to 5 cal ka bp indicate wetter local conditions with higher water availability, whereas more enriched values during the middle Holocene (similar to 8 until at least 5 cal ka bp) indicate drier conditions with increased drought stress.
英文关键词	Caucasus region compound-specific isotopes floodplain soils Holocene paleoclimate leaf wax biomarkers
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000534582800001
WOS关键词	DELTA-D VALUES ; NORTH-ATLANTIC OSCILLATION ; N-ALKANES ; MEDITERRANEAN REGION ; CLIMATE VARIABILITY ; HUMAN SETTLEMENT ; HIGH-RESOLUTION ; D/H RATIOS ; WATER ; VEGETATION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324514
作者单位	[Bliedtner, Marcel; Zech, Roland] Friedrich Schiller Univ Jena, Inst Geog, Jena, Germany; [Bliedtner, Marcel; Schaefer, Imke] Univ Bern, Inst Geog, Bern, Switzerland; [Bliedtner, Marcel; Schaefer, Imke] Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland; [Zech, Jana] Max Planck Inst Sci Human Hist, Jena, Germany; [von Suchodoletz, Hans] Univ Leipzig, Inst Geog, Leipzig, Germany
推荐引用方式 GB/T 7714	Bliedtner, Marcel,Zech, Roland,Zech, Jana,et al. A first Holocene leaf wax isotope-based paleoclimate record from the semi-humid to semi-arid south-eastern Caucasian lowlands[J],2020,35(5):625-633.
APA	Bliedtner, Marcel,Zech, Roland,Zech, Jana,Schaefer, Imke,&von Suchodoletz, Hans.(2020).A first Holocene leaf wax isotope-based paleoclimate record from the semi-humid to semi-arid south-eastern Caucasian lowlands.JOURNAL OF QUATERNARY SCIENCE,35(5),625-633.
MLA	Bliedtner, Marcel,et al."A first Holocene leaf wax isotope-based paleoclimate record from the semi-humid to semi-arid south-eastern Caucasian lowlands".JOURNAL OF QUATERNARY SCIENCE 35.5(2020):625-633.