globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2169
论文题名:
Long-term stabilization of deep soil carbon by fire and burial during early Holocene climate change
作者: Marin-Spiotta E.; Chaopricha N.T.; Plante A.F.; Diefendorf A.F.; Mueller C.W.; Grandy A.S.; Mason J.A.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期:6
起始页码: 428
结束页码: 432
语种: 英语
Scopus关键词: arid region ; black carbon ; burial (geology) ; chemical composition ; climate variation ; disturbance ; drought ; fire behavior ; Holocene ; loess ; organic carbon ; paleoclimate ; paleosol ; semiarid region ; soil carbon ; vascular plant ; vegetation cover ; Nebraska ; United States ; Peoria ; Tracheophyta
英文摘要: Buried soils contain large reservoirs of organic carbon at depths that are not typically included in regional and global soil carbon inventories 1. One such palaeosol, the Brady soil of southwestern Nebraska, USA, is buried under six metres of loess. The Brady soil developed at the land surface on the late-Pleistocene-aged Peoria Loess in a period of warmth and wetness during which dunefields and dust sources across the region were stabilized2,3. Abrupt climate change in the early Holocene led to increased loess deposition that buried the soil. Here, we used spectroscopic and isotopic analyses to determine the composition and stability of organic carbon in the Brady soil. We identify high levels of black carbon, indicating extensive biomass burning. In addition, we found intact vascular plant lipids in soil organic matter with radiocarbon ages ranging from 10,500 to 12,400 cal yr BP, indicating decomposition was slowed by rapid burial at the start of the Holocene. We conclude that landscape disturbance caused by abrupt climate change, fire and the loss of vegetative cover contributed to deep carbon sequestration as the soil was quickly buried under accumulating loess. We suggest that terrestrial soil carbon storage in arid and semi-arid environments could undergo landscape-scale shifts in response to rising temperatures, increased fire activity or drought. © 2014 Macmillan Publishers Limited.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106510
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Geography, University of Wisconsin-Madison, Madison, WI 53706, United States; Nelson Institute for Environmental Studies, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, PA 19104, United States; Department of Geology, University of Cincinnati, Cincinnati, OH 45221, United States; Department of Ecology and Ecosystem Management, Center of Life and Food SciencesWeihenstephan, Technische Universität München, D-85350, Freisling-Weihenstephan, Germany; Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH 03824, United States

Recommended Citation:
Marin-Spiotta E.,Chaopricha N.T.,Plante A.F.,et al. Long-term stabilization of deep soil carbon by fire and burial during early Holocene climate change[J]. Nature Geoscience,2014-01-01,7(6)
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