DOI: 10.1016/j.quascirev.2016.01.007
Scopus记录号: 2-s2.0-84954488146
论文题名: Rapid human-induced landscape transformation in Madagascar at the end of the first millennium of the Common Era
作者: Burns S.J. ; Godfrey L.R. ; Faina P. ; McGee D. ; Hardt B. ; Ranivoharimanana L. ; Randrianasy J.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 134 起始页码: 92
结束页码: 99
语种: 英语
英文关键词: Madagascar
; Paleoclimatology
; Paleoecology
; Speleothems
; Stable isotopes
Scopus关键词: Ecology
; Environmental impact
; Isotopes
; Plants (botany)
; Madagascar
; Paleoclimatology
; Paleoecology
; Speleothems
; Stable isotopes
; Metadata
; carbon isotope
; cattle
; environmental impact assessment
; extinction
; fodder
; grass
; grassland
; human activity
; landscape change
; oxygen isotope
; paleoclimate
; paleoecology
; speleothem
; stable isotope
; stalagmite
; Anjohibe Cave
; Madagascar
; Mahajanga
; Bos
英文摘要: The environmental impact of the early human inhabitants of Madagascar remains heavily debated. We present results from a study using two stalagmites collected from Anjohibe Cave in northwestern Madagascar to investigate the paleoecology and paleoclimate of northwestern Madagascar over the past 1800 years. Carbon stable isotopic data indicate a rapid, complete transformation from a flora dominated by C3 plants to a C4 grassland system. This transformation is well replicated in both stalagmites, occurred at 890 CE and was completed within one century. We infer that the change was the result of a dramatic increase in the use of fire to promote the growth of grass for cattle fodder. Further, stalagmite oxygen isotope ratios show no significant variation across the carbon isotope excursion, demonstrating that the landscape transformation was not related to changes in precipitation. Our study illustrates the profound impact early inhabitants had on the environment, and implies that forest loss was one trigger of megafaunal extinction. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59682
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geosciences, University of Massachusetts, 611 North Pleasant Street, Amherst, MA, United States; Department of Anthropology, University of Massachusetts, 240 Hicks Way, Amherst, MA, United States; Département de Paléontologie et d'Anthropologie Biologique, Faculté des Sciences, Antananarivo, Madagascar; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, United States
Recommended Citation:
Burns S.J.,Godfrey L.R.,Faina P.,et al. Rapid human-induced landscape transformation in Madagascar at the end of the first millennium of the Common Era[J]. Quaternary Science Reviews,2016-01-01,134