DOI: 10.1016/j.foreco.2013.03.049
Scopus记录号: 2-s2.0-84877122979
论文题名: Seed abscission schedules and the timing of post-fire salvage of Picea mariana and Pinus banksiana
作者: Greene D.F. ; Splawinski T.B. ; Gauthier S. ; Bergeron Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 303 起始页码: 20
结束页码: 24
语种: 英语
英文关键词: Abscission
; Fire
; Recruitment
; Regeneration
; Salvage
; Seed
Scopus关键词: Abscission
; Black spruce (Picea mariana)
; Jack pine (Pinus banksiana)
; Natural regeneration
; Recruitment
; Regenerating plants
; Regeneration
; Salvage operations
; Incineration
; Optimization
; Plants (botany)
; Salvaging
; Seed
; Fires
; abscission
; burning
; forest fire
; recruitment (population dynamics)
; regeneration
; seed
; seed bank
; tree
英文摘要: For aerial seedbank species, the seed abscission schedule following fire is of practical interest as it affects the optimal timing of post-fire salvage operations designed to maximize natural regeneration. It is also of theoretical interest as we would expect that the rapid deterioration of the better (very thin duff or exposed mineral soil) post-fire seedbeds due to leaf-fall from regenerating plants ought to select for rapid dissemination of seeds following burning. Nonetheless, there are no published reports of the abscission schedule of an aerial seedbank species that include the full temporal range from the fire date to several years after. In northwestern Quebec, we used eight burnt, non-salvaged stands, four dominated by black spruce (Picea mariana) and four dominated by jack pine (Pinus banksiana), in three different fires to examine the seed abscission schedule of these aerial seedbank species for the first 3. years after fire. We found that (1) the abscission schedules of populations of each species differed between fires and (2) black spruce dispersed seeds from the cones at a significantly slower rate than jack pine at all fires. Extrapolating from the regressions (all fires lumped), we conclude that approximately 90% of jack pine and black spruce seeds will have been dispersed by 1 and 5. years, respectively, after a fire. Further, we argue that due to its protracted abscission schedule, early post-fire salvage will invariably require that black spruce be planted. The approach adopted here should be useful for optimizing post-fire salvage timing for all commercially valuable species with aerial seedbanks. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66536
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Geography, Planning and Environment, Concordia University, 1455 de Maisonneuve Blvd. West, Montréal, QC H3G 1M8, Canada; Institute of Environmental Science, Université du Québec à Montréal, 141 avenue du Président-Kennedy, Montréal, QC H2X 1Y4, Canada; Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 rue du PEPS, P.O. Box 10380, Stn. Sainte Foy, Québec, QC G1V 4C7, Canada; Centre d'étude sur la forêt and Chaire industrielle en amenagement forestier durable, Université du Québec à Montréal, CP 8888 Succursale A, Montréal, QC H3C 3P8, Canada
Recommended Citation:
Greene D.F.,Splawinski T.B.,Gauthier S.,et al. Seed abscission schedules and the timing of post-fire salvage of Picea mariana and Pinus banksiana[J]. Forest Ecology and Management,2013-01-01,303