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DOI	10.1016/j.geodrs.2021.e00429
	How vegetation patches drive soil development and organic matter formation on polar islands
	Prater, Isabel; Hrbacek, Filip; Braun, Christina; Vidal, Alix; Meier, Lars Arne; Nyvlt, Daniel; Mueller, Carsten W.
通讯作者	Prater, I (corresponding author), Tech Univ Munich, Chair Soil Sci, Emil Ramann Str 2, D-85354 Freising Weihenstephan, Germany.
来源期刊	GEODERMA REGIONAL
ISSN	2352-0094
出版年	2021
卷号	27
英文摘要	As Antarctica is strongly affected by climate change and global warming, the factors that mainly determine soil development might also shift from the dominance of physical to biochemical processes. Vegetation is restricted to the margins of the Antarctic continent with the Antarctic Peninsula being a region of patchily distributed vegetation. While on James Ross Island in the Weddell Sea only cryptogams can be found, on King George Island in the Southern Ocean also vascular plants are present. As rates of soil development and the build-up of soil organic matter are very low in these polar conditions, it can be hypothesized that vegetation patches comprise hot spots for biogeochemical soil processes. To analyze the effect of vegetation on soils in maritime Antarctica, we investigated vegetated and vegetation-free soils from both islands. On both islands, we found clearly higher carbon and nitrogen contents in vegetated soils. Using physical fractionation, we could demonstrate that the amount of free and occluded particulate organic matter is also higher in soils under vegetation, but at the same time, that clay-sized mineral-associated organic matter contributes most to carbon storage in all soils. The dominance of aromatic compounds in vegetation-free soils was disclosed by 13C NMR spectroscopy as well as a larger proportion of compounds with a lower molecular weight in vegetated soils. Thus, vegetation patches lead to soil organic matter containing higher amounts of bioavailable substrates that can be assumed to foster microbial activity and thus drive further soil development in a warmer future. However, in the cold arid environments a propagation of aridity might result in vegetation dieback and thus in a ceasing of biological soil activity driving a slowing of soil development.
英文关键词	Antarctic Peninsula King George Island James Ross Island Vegetation-soil interaction Particulate organic matter Mineral-associated organic matter C-13 NMR spectroscopy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000701943100002
WOS关键词	JAMES-ROSS-ISLAND ; KING GEORGE ISLAND ; ANTARCTIC VASCULAR PLANTS ; STATE C-13 NMR ; DESCHAMPSIA-ANTARCTICA ; XANES SPECTROSCOPY ; SEAL CARCASSES ; SALT TOLERANCE ; ULU PENINSULA ; CARBON STOCKS
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363404
作者单位	[Prater, Isabel; Vidal, Alix; Mueller, Carsten W.] Tech Univ Munich, Res Dept Ecol & Ecosyst Management, Chair Soil Sci, D-85354 Freising Weihenstephan, Germany; [Hrbacek, Filip; Nyvlt, Daniel] Masaryk Univ, Dept Geog, PolarGeoLab, Brno 60177, Czech Republic; [Braun, Christina] Friedrich Schiller Univ, Inst Ecol & Evolut, D-07743 Jena, Germany; [Meier, Lars Arne] Univ Tubingen, Dept Geosci, D-72070 Tubingen, Germany; [Mueller, Carsten W.] Univ Copenhagen, Dept Geosci & Nat Resource Management, DK-1350 Copenhagen K, Denmark
推荐引用方式 GB/T 7714	Prater, Isabel,Hrbacek, Filip,Braun, Christina,et al. How vegetation patches drive soil development and organic matter formation on polar islands[J],2021,27.
APA	Prater, Isabel.,Hrbacek, Filip.,Braun, Christina.,Vidal, Alix.,Meier, Lars Arne.,...&Mueller, Carsten W..(2021).How vegetation patches drive soil development and organic matter formation on polar islands.GEODERMA REGIONAL,27.
MLA	Prater, Isabel,et al."How vegetation patches drive soil development and organic matter formation on polar islands".GEODERMA REGIONAL 27(2021).