| DOI: | 10.1016/j.quascirev.2013.06.007
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| Scopus记录号: | 2-s2.0-84880417069
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| 论文题名: | Climatic change causes abrupt changes in forest composition, inferred from a high-resolution pollen record, southwestern Quebec, Canada |
| 作者: | Paquette N.; Gajewski K.
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| 刊名: | Quaternary Science Reviews
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| ISSN: | 2773791
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| 出版年: | 2013
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| 卷: | 75 | | 起始页码: | 169
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| 结束页码: | 180
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| 语种: | 英语
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| 英文关键词: | Charcoal
; Eastern deciduous forest
; Forest dynamics
; Holocene
; Lake sediments
; Paleoclimate reconstruction
; Pollen
; Quebec
; Varves
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| Scopus关键词: | Deciduous forest
; Forest dynamics
; Holocenes
; Lake sediments
; Paleoclimate reconstruction
; Pollen
; Quebec
; Varves
; Charcoal
; Climate change
; Hardwoods
; Lakes
; Sediments
; Forestry
; climate variation
; deciduous forest
; forest dynamics
; Holocene
; human activity
; human settlement
; lacustrine deposit
; paleoclimate
; palynology
; sampling
; Charcoal
; Forests
; Hardwoods
; Lakes
; Pollen
; Seasonal Variation
; Sediments
; Canada
; Quebec [Canada]
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| 英文摘要: | A pollen profile from a lake with varved sediments sampled at continuous 10-year intervals and spanning the past 1000 years was analyzed to understand the effects of climate change and anthropogenic activity on forests in southwestern Quebec. Pollen assemblages were dominated by arboreal taxa, primarily Pinus, Tsuga, Betula and Fagus. Between 990 and 1560 AD, pollen accumulation rates and percentages of hardwoods (Betula, Fagus, Acer, Ulmus, Tilia) and Tsuga were relatively high. At 1560 AD, PARs of many hardwood taxa (Fagus, Acer, Betula, Fraxinus, Ulmus) and Tsuga abruptly decreased, some remaining low for the remainder of the record (Tsuga, Fagus, Acer), but others increasing after 50 years (Betula, Fraxinus). An increase in non-arboreal pollen between 1810 and 2010 AD was caused by European settlement of the area. The transition in the pollen assemblages beginning at 1560 AD and a climate reconstruction based on these data shows an abrupt climate cooling had a significant impact on the pollen accumulation rates of the region within a couple of decades. A synthesis of this record with other high-resolution and well-dated pollen data from the conifer-hardwood forest of eastern North America shows consistent results across the whole area, indicating that very-high resolution pollen data can provide insight into multi-decadal climate variability and its impact on forest vegetation. © 2013 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/60553
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| Appears in Collections: | 过去全球变化的重建
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作者单位: | Laboratory for Paleoclimatology and Climatology, Department of Geography, University of Ottawa, Ottawa, ON K1N 6N5, Canada
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| Recommended Citation: | |
Paquette N.,Gajewski K.. Climatic change causes abrupt changes in forest composition, inferred from a high-resolution pollen record, southwestern Quebec, Canada[J]. Quaternary Science Reviews,2013-01-01,75
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