DOI: 10.1016/j.quascirev.2018.01.022
Scopus记录号: 2-s2.0-85041821782
论文题名: 8800 years of high-altitude vegetation and climate history at the Rutor Glacier forefield, Italian Alps. Evidence of middle Holocene timberline rise and glacier contraction
作者: Badino F. ; Ravazzi C. ; Vallè F. ; Pini R. ; Aceti A. ; Brunetti M. ; Champvillair E. ; Maggi V. ; Maspero F. ; Perego R. ; Orombelli G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 185 起始页码: 41
结束页码: 68
语种: 英语
英文关键词: 14C dating
; Alps
; Europe
; Historic timberline
; Holocene
; Holocene Thermal Maximum
; Palaeoecology
; Paleoclimatology
; Stratigraphy
; Vegetation dynamics
Scopus关键词: Ecology
; Forestry
; Geochronology
; Plants (botany)
; Sedimentology
; Stratigraphy
; Vegetation
; 14C dating
; Alps
; Europe
; Historic timberline
; Holocene thermal maximums
; Holocenes
; Palaeoecology
; Paleoclimatology
; Vegetation dynamics
; Climate change
; altitude
; carbon isotope
; climate conditions
; coniferous forest
; deglaciation
; ecotone
; glacier advance
; historical record
; Holocene
; human activity
; Hypsithermal
; Middle Ages
; paleoclimate
; paleoecology
; radiocarbon dating
; stratigraphy
; treeline
; vegetation dynamics
; vegetation history
; Alps
; Italy
; Italy
; Rutor Glacier
; Valle d'Aosta
; Pinus cembra
英文摘要: Sedimentary archives at or near the timberline ecotone in Alpine glaciated areas contain records to study Holocene climate change and the interplay between climate, ecosystems, and humans. We focused on records of timberline and glacier oscillations in the Rutor Glacier forefield (Western Italian Alps) in the last 8800 years. Human activity in this area was negligible for most of the Holocene. We adopted an integrative stratigraphic approach including proxies for glacier advance and timberline estimation, sedimentary events, and reconstructed temperatures. Changes in timberline ecotone correlate to climate until the Middle Ages. Pollen-stratigraphic evidence of a primary plant succession highlights a lag beween local deglaciation and the first reliable 14C age. The radiocarbon chronology points to a prolonged phase of glacier contraction between 8.8 and 3.7 ka cal BP. Even later the glacier remained within its LIA limits. Between 8.4 and 4 ka cal BP MAT-inferred TJuly fluctuated near 12.4 °C, ca. 3.1 °C higher than today. During this period, a Pinus cembra forest belt grew at 2600 m asl with an upper limit of tree groves placed 434 ± 310 m above the current open forest limit. This Holocene phase of thermal maximum ended between 3.98 and 3.51 ± 70 ka cal BP and with a substantial rearrangement of forest composition; temperature reconstruction shows a decrease of 1.8 °C. This climate deterioration concluded the Subboreal thermal optimum, mirroring glacial advances widely documented in the Alps. The Rutor Glacier advanced at ca. AD 1093 ± 65, and remained inside the LIA maximum extent. The LIA started since AD 1594, and culminated between AD 1751 and 1864. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112264
Appears in Collections: 气候减缓与适应
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作者单位: Dept. of Environmental and Earth Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milano, 20126, Italy; CNR-Institute for the Dynamics of Environmental Processes, Lab. of Palynology and Palaeoecology, Piazza della Scienza 1, Milano, 20126, Italy; Dept. of Material Sciences, University of Milano-Bicocca, Piazza della Scienza 4, Milano, 20126, Italy; CNR-Institute of Atmospheric Sciences and Climate, Via Gobetti 101, Bologna, 40129, Italy
Recommended Citation:
Badino F.,Ravazzi C.,Vallè F.,et al. 8800 years of high-altitude vegetation and climate history at the Rutor Glacier forefield, Italian Alps. Evidence of middle Holocene timberline rise and glacier contraction[J]. Quaternary Science Reviews,2018-01-01,185