globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2018.10.001
Scopus记录号: 2-s2.0-85054441855
论文题名:
Holocene vegetation history and quantitative climate reconstructions in a high-elevation oceanic district of the Italian Alps. Evidence for a middle to late Holocene precipitation increase
作者: Furlanetto G.; Ravazzi C.; Pini R.; Vallè F.; Brunetti M.; Comolli R.; Novellino M.D.; Garozzo L.; Maggi V.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 200
起始页码: 212
结束页码: 236
语种: 英语
英文关键词: Europe ; Holocene ; Paleoclimatology ; Pollen Accumulation Rates ; Stratigraphy ; Timberline ; Vegetation dynamics
Scopus关键词: Repair ; Sedimentology ; Storms ; Stratigraphy ; Europe ; Holocenes ; Paleoclimatology ; Pollen accumulation rate ; Timberline ; Vegetation dynamics ; Vegetation ; Alnus viridis ; Chironomidae ; Pinus cembra
英文摘要: We reconstructed the vegetation and climate history during the last 10 ka in a high-elevation sedimentary record (Armentarga peat bog, 2345 m asl) on the southern flank of the European Alps through the study of paleoecological and sedimentary proxies. We included a specific elevational transect of modern Pollen Accumulation Rates for timberline-forming trees and shrubs (Alnus viridis, Pinus sylvestris/mugo, Pinus cembra). Quantitative reconstructions of July temperature and annual precipitation were obtained by applying numerical transfer functions built on an extensive pollen-climate calibration set from the European Alps. Changes in elevational vegetation arrangement were primarily driven by phases of precipitation increase, and to a lesser extent by millennial-scale temperature changes already known from glacier, timberline, chironomids and speleothem records at Alpine scale. Changes in pollen-inferred annual precipitation occurred in three main steps. An early Holocene moderately humid phase is mirrored by the early spread of Alnus viridis dwarf forests. Precipitation started to increase at 6.2 ka cal BP. A further, prominent step forward at the Middle to Late Holocene transition led to the high values of snowfall and runoff characterizing today's oceanic elevational climates of the outer Italian Alps. This change led to timberline depression and grassland expansion. Locally, human impact was weak at the Late Neolithic/Bronze Age transition. This event correlates with lake level oscillations in the northern Mediterranean borderlands, suggesting intensification of southern air masses conveyed by Tyrrhenian cyclones towards windward districts. © 2018 Elsevier Ltd
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被引频次[WOS]:17   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112008
Appears in Collections:气候减缓与适应

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作者单位: Univ. of Milano - Bicocca, Dept. of Environmental and Earth Sciences, Piazza della Scienza 1, Milano, Italy; CNR - Institute for the Dynamics of Environmental Processes (IDPA), Laboratory of Palynology and Palaeoecology, Piazza della Scienza 1, Milano, Italy; CNR- Institute of Atmospheric Sciences and Climate (ISAC), Via Gobetti 101, Bologna, 40129, Italy

Recommended Citation:
Furlanetto G.,Ravazzi C.,Pini R.,et al. Holocene vegetation history and quantitative climate reconstructions in a high-elevation oceanic district of the Italian Alps. Evidence for a middle to late Holocene precipitation increase[J]. Quaternary Science Reviews,2018-01-01,200
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