globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.03.004
Scopus记录号: 2-s2.0-84926327547
论文题名:
Combining charcoal sediment and molecular markers to infer a Holocene fire history in the Maya Lowlands of Petén, Guatemala
作者: Schüpbach S.; Kirchgeorg T.; Colombaroli D.; Beffa G.; Radaelli M.; Kehrwald N.M.; Barbante C.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 115
起始页码: 123
结束页码: 131
语种: 英语
英文关键词: Biomass burning ; Climate ; Guatemala ; Holocene ; Human activities ; Levoglucosan ; Sedimentary charcoal
Scopus关键词: Charcoal ; Fires ; Lakes ; Land use ; Vegetation ; Biomass-burning ; Climate ; Guatemala ; Holocenes ; Human activities ; Levoglucosan ; Climate change ; charcoal ; Holocene ; tropical environment ; vegetation dynamics ; Guatemala [Central America] ; Maya Lowlands
英文摘要: Vegetation changes in the Maya Lowlands during the Holocene are a result of changing climate conditions, solely anthropogenic activities, or interactions of both factors. As a consequence, it is difficult to assess how tropical ecosystems will cope with projected changes in precipitation and land-use intensification over the next decades. We investigated the role of fire during the Holocene by combining macroscopic charcoal and the molecular fire proxies levoglucosan, mannosan and galactosan. Combining these two different fire proxies allows a more robust understanding of the complex history of fire regimes at different spatial scales during the Holocene. In order to infer changes in past biomass burning, we analysed a lake sediment core from Lake Petén Itzá, Guatemala, and compared our results with millennial-scale vegetation and climate change available in the area. We detected three periods of high fire activity during the Holocene: 9500-6000 cal yr BP, 3700 cal yr BP and 2700 cal yr BP. We attribute the first maximum mostly to climate conditions and the last maximum to human activities. The rapid change between burned vegetation types at the 3700 cal yr BP fire maximum may result from human activity. © 2015 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59951
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作者单位: Department of Environmental Sciences, Informatics and Statistics, University Ca'Foscari, Venice, Italy; Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany; Institute of Plant Sciences, University of Bern, Bern, Switzerland; Institute for the Dynamics of Environmental Processes-CNR, Venice, Italy; Centro Linceo B. Segre, Accademia Nazionale dei Lincei, Rome, Italy

Recommended Citation:
Schüpbach S.,Kirchgeorg T.,Colombaroli D.,et al. Combining charcoal sediment and molecular markers to infer a Holocene fire history in the Maya Lowlands of Petén, Guatemala[J]. Quaternary Science Reviews,2015-01-01,115
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