DOI: 10.1016/j.foreco.2014.04.002
Scopus记录号: 2-s2.0-84902074224
论文题名: Salvage logging affects early post-fire tree composition in Canadian boreal forest
作者: Boucher D. ; Gauthier S. ; Noël J. ; Greene D.F. ; Bergeron Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 325 起始页码: 118
结束页码: 127
语种: 英语
英文关键词: Aerial seedbank species
; Among-site heterogeneity
; Fire severity
; Post-fire composition
; Salvage logging
; Vegetative reproduction species
Scopus关键词: Forestry
; Losses
; Principal component analysis
; Among-site heterogeneity
; Fire severity
; Post-fire
; Salvage logging
; Vegetative reproduction species
; Fires
; coniferous forest
; fire behavior
; heterogeneity
; logging (timber)
; recruitment (population dynamics)
; salvaging
; seed bank
; Biodiversity
; Forest Fires
; Logging
; Plants
; Canada
; Quebec [Canada]
英文摘要: Salvage logging following fire has become increasingly used during the last few decades as a way to mitigate economic losses caused by fire. The removal of burned mature trees including their aerial seedbanks immediately after fire could have impacts on post-fire tree recruitment but specific effects are still unknown. We conducted a study of a fire in the boreal forest of Québec, Canada, to answer the following questions: Does fire severity influence tree compositional changes after fire? Does salvage logging affect these changes by favouring species that can reproduce vegetatively? Does salvage logging reduce among-sites heterogeneity relative to natural post-fire forests? To address these questions, we measured pre- and post-fire tree stocking (2. years after fire) of burned forest of different pre-fire stand composition types both in salvaged and non-salvaged sites, whereas fire severity was measured in the latter only. Species composition was evaluated using a Principal Component Analysis, and mixed models were used to test the effects of canopy fire severity, residual organic layer thickness, stand type and salvage logging on pre- to post-fire composition changes. In non-salvaged sites, fire severity had a significant effect on composition changes, and the effect depended on stand type. Low fire severity favoured species that can reproduce vegetatively such as Populus tremuloides, whereas moderate and high fire severity favoured the aerial seedbank species such as Pinus banksiana and Picea mariana. We found no effect of residual organic layer thickness on post-fire composition changes. Salvage treatment had a significant effect on post-fire composition changes and the effect depended on stand type. Overall, salvage logging tended to favour species relying upon vegetative reproduction more than fire alone, which favoured P. banksiana. Although among-site heterogeneity after salvage logging was not smaller than after fire only, salvage alters species composition more than does natural fire alone. Since salvage logging and low severity portions of the burn, which are generally not salvaged, both favour tree species with vegetative reproduction, our results suggest that these species will increase their dominance throughout the landscape if burned forests are systematically salvaged. We suggest strategies that can help to attenuate this divergence from natural post-fire conditions. © 2014 . Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65932
Appears in Collections: 影响、适应和脆弱性
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作者单位: Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 10380, Stn. Sainte-Foy, Québec, QC G1V 4C7, Canada; NSERC/UQAT/UQAM Industrial Chair in Sustainable Forest Management, Université du Québec en Abitibi-Témiscamingue, 445, boul. de l'Université, Rouyn-Noranda, QC J9X 5E4, Canada; Department of Geography, Planning and Environment, Concordia University, 1455 de Maisonneuve W., Montréal, QC H3G 1M8, Canada
Recommended Citation:
Boucher D.,Gauthier S.,Noël J.,et al. Salvage logging affects early post-fire tree composition in Canadian boreal forest[J]. Forest Ecology and Management,2014-01-01,325