globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.foreco.2017.05.026
Scopus记录号: 2-s2.0-85019543744
论文题名:
Ecological drivers of post-fire regeneration in a recently managed boreal forest landscape of eastern Canada
作者: Perrault-Hébert M.; Boucher Y.; Fournier R.; Girard F.; Auger I.; Thiffault N.; Grenon F.
刊名: Forest Ecology and Management
ISSN:  0378-1127
出版年: 2017
卷: 399
起始页码: 74
结束页码: 81
语种: 英语
英文关键词: Black spruce ; Clearcutting ; Disturbances ; dNBR ; Fire severity ; Global change ; Logging ; Resilience ; Successive disturbances
Scopus关键词: Conservation ; Ecology ; Forestry ; Logging (forestry) ; Reforestation ; Black spruce ; Clearcutting ; Disturbances ; dNBR ; Fire severity ; Global change ; Resilience ; Successive disturbances ; Fires ; Picea mariana
英文摘要: Clearcutting practices combined with the predicted increase in fire activity may induce post-fire regeneration failure in boreal forest landscapes. This study aims (1) to evaluate if recently managed landscape by clear cut logging is susceptible to be affected by post-fire regeneration failure; and (2) to explore the ecological drivers of black spruce (Picea mariana (Mill.) BSP) post-fire regeneration. In 2014, we surveyed the regeneration of 36 stands in northwestern Quebec that had burned in a major fire in 2005. Fire severity was evaluated for each site with the differenced Normalized Burn Ratio. Using linear models, we explored the relationship between environmental variables (fire severity, pre-fire stand maturity, nature of the seedbed, and physiographic variables) and black spruce post-fire regeneration. Black spruce post-fire seedling density was highly variable (range: 25–16 000 seedlings/ha; mean ± standard deviation: 4549 seedlings/ha ± 4752) within the studied fire, but did not significantly differ between stands that had been logged 50 years prior to fire and those that were mature prior to the 2005 fire. However, post-fire regeneration failure (defined as <40% stocking that corresponds in our study region to a regeneration density <1750 seedlings/ha) was observed in 48% of the stands that had been logged, but only in 29% of the stands that were mature prior to the fire. The presence of residual trees left after clearcutting may explain why regeneration level was relatively good (>50%) in stands affected by past logging activities. Our study illustrates how biological legacies, environmental conditions and fire severity determine post-fire recovery and resilience of black spruce-dominated ecosystems of eastern Canada. By identifying the drivers of post-fire regeneration success, our study will help forest managers allocating resources where restoration of productive forest are truly needed. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64274
Appears in Collections:影响、适应和脆弱性

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作者单位: Université de Montréal, Département de Géographie, chemin de la Côte-Sainte-Catherine, C.P. 6128, succursale Centre-ville, Montréal, Québec (QC), Canada; Centre for Forest Research, Université du Québec à Montréal, P.O. Box 8888, Centre-ville Station, Montréal, QC, Canada; Direction de la recherche forestière, Ministère des Forêts, de la Faune et des Parcs du Québec, 2700, rue Einstein, Québec, QC, Canada; Université du Québec à Montréal, Département des sciences biologiques, P.O. Box 8888, Centre-Ville Station, Montréal, QC, Canada; Université de Sherbrooke, Département de géomatique appliquée, 2500, boulevard de l'Université, Sherbrooke, Sherbrooke, QC, Canada; Centre d'enseignement et de recherche en foresterie (CERFO), 2424, chemin Sainte-Foy, Québec, QC, Canada

Recommended Citation:
Perrault-Hébert M.,Boucher Y.,Fournier R.,et al. Ecological drivers of post-fire regeneration in a recently managed boreal forest landscape of eastern Canada[J]. Forest Ecology and Management,2017-01-01,399
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