globalchange  > 影响、适应和脆弱性
DOI: 10.5194/cp-14-871-2018
Scopus记录号: 2-s2.0-85049195520
论文题名:
High-latitude Southern Hemisphere fire history during the mid- to late Holocene (6000-750BP)
作者: Battistel D.; Kehrwald N.M.; Zennaro P.; Pellegrino G.; Barbaro E.; Zangrando R.; Pedeli X.X.; Varin C.; Spolaor A.; Vallelonga P.T.; Gambaro A.; Barbante C.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2018
卷: 14, 期:6
起始页码: 871
结束页码: 886
语种: 英语
Scopus关键词: atmospheric transport ; biomarker ; biomass burning ; fire history ; Holocene ; hydrocarbon ; ice core ; latitude ; precipitation (climatology) ; Southern Hemisphere ; stable isotope ; Antarctica ; East Antarctica ; South America ; Talos Dome
英文摘要: We determined the specific biomass burning biomarker levoglucosan in an ice core from the TALos Dome Ice CorE drilling project (TALDICE) during the mid- to late Holocene (6000-750BP). The levoglucosan record is characterized by a long-term increase with higher rates starting at ∼ 4000BP and peaks between 2500 and 1500BP. The anomalous increase in levoglucosan centered at ∼ 2000BP is consistent with other Antarctic biomass burning records. Multiple atmospheric phenomena affect the coastal Antarctic Talos Dome drilling site, where the Southern Annular Mode (SAM) is the most prominent as the Southern Annular Mode Index (SAMA) correlates with stable isotopes in precipitation throughout the most recent 1000 years of the ice core. If this connection remains throughout the mid- to late Holocene, then our results demonstrate that changes in biomass burning, rather than changes in atmospheric transport, are the major influence on the TALDICE levoglucosan record. Comparisons with charcoal syntheses help evaluate fire sources, showing a greater contribution from southern South American fires than from Australian biomass burning. The levoglucosan peak centered at ∼ 2000BP occurs during a cool period throughout the Southern Hemisphere, yet during a time of increased fire activity in both northern and southern Patagonia. This peak in biomass burning is influenced by increased vegetation in southern South America from a preceding humid period, in which the vegetation desiccated during the following cool, dry period. The Talos Dome ice core record from 6000 to ∼ 750BP currently does not provide clear evidence that the fire record may be strongly affected by anthropogenic activities during the mid- to late Holocene, although we cannot exclude at least a partial influence. © 2018 Copernicus GmbH. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109554
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Department of Environmental Science, Informatics and Statistics, University Ca' Foscari of Venice, Via Torino 155, Mestre Venezia, Venice, 30170, Italy; Institute for the Dynamics of Environmental Processes - IDPA-CNR, Via Torino 155, Mestre Venezia, Venice, 30170, Italy; US Geological Survey, Geosciences and Environmental Change Science Center, Denver, CO 80225, United States; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen, 2100, Denmark

Recommended Citation:
Battistel D.,Kehrwald N.M.,Zennaro P.,et al. High-latitude Southern Hemisphere fire history during the mid- to late Holocene (6000-750BP)[J]. Climate of the Past,2018-01-01,14(6)
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