DOI: 10.1016/j.foreco.2013.08.037
Scopus记录号: 2-s2.0-84884215770
论文题名: Stand recovery and self-organization following large-scale mountain pine beetle induced canopy mortality in northern forests
作者: Amoroso M.M. ; David Coates K. ; Astrup R.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 300
结束页码: 311
语种: 英语
英文关键词: Mountain pine beetle
; Radial growth
; Regeneration
; Stand recovery
Scopus关键词: Ecosystem services
; Mountain pine beetle
; Natural regeneration
; Radial growth
; Regeneration
; Regeneration dynamics
; Secondary structures
; Species composition
; Epidemiology
; Plants (botany)
; Population statistics
; Recovery
; Secondary recovery
; Reforestation
; beetle
; community composition
; coniferous forest
; ecosystem service
; epidemic
; forest canopy
; forest management
; mortality
; regeneration
; self organization
; stand dynamics
; British Columbia
; Canada
; Flathead Valley
英文摘要: A mountain pine beetle (MPB) epidemic is currently ravaging large areas of interior British Columbia (BC) with significant implications for ecosystem services including future timber supply and community economic stability. Information is needed on future stand dynamics in areas of impacted forests that are unlikely to be salvaged logged. Of greatest concern are stands dominated by lodgepole pine (>50% timber volume). Predicting how surviving trees in these areas respond and grow and the timing and species composition of natural regeneration ingress is of critical importance for multiple forest values. We undertook a retrospective study in the Flathead Valley of southeastern British Columbia where an intense MPB epidemic peaked in 1979-1980. Our objective was to gain insight into stand recovery and stand self-organization as influenced by species-specific growth responses of different sized secondary structure trees (individual seedling, sapling, sub-canopy and canopy trees surviving the epidemic) and post-beetle regeneration dynamics. MPB mortality rates, the percent of basal area killed by beetles, varied from 42% to 100% with most stands between 60% and 80%. In general, all surviving secondary structure released but the extent of growth release exhibited species variability. Release of surviving canopy lodgepole pine trees was often dramatic and greatest in stands with high total stand MPB mortality rates. Ingress of natural regeneration was slow in the first few years after MPB attack but there was a strong pulse of recruitment 10-20. years post disturbance which then slowed considerably. Nearly 30. years after the MPB attack, the stocking and composition of the understories have changed dramatically. Overall, the occurrence of the MPB epidemic resulted in more structurally and compositionally diverse stands leading to multiple successional pathways different from those of even-age pine dominated stands. The recovery and self-organization of unsalvaged natural stands in the Flathead Valley was a complicated process. It has provided insights for future forest management in areas impacted by the current massive MPB epidemic ongoing for the past decade in western North America. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66280
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales, CONICET, Av. Ruiz Leal s/n, Parque Gral. San Martín, C.C. 330, 5500 Mendoza, Argentina; Ministry of Forests, Lands and Natural Resource Operations, Bag 6000, Smithers, British Columbia V0J N20, Canada; Bulkley Valley Research Centre, Box 4274, Smithers, BC V0J 2N0, Canada; Norwegian Institute for Forest and Landscape Høgskoleveien 8, Ås Postboks 115, 1431 Ås, Norway
Recommended Citation:
Amoroso M.M.,David Coates K.,Astrup R.. Stand recovery and self-organization following large-scale mountain pine beetle induced canopy mortality in northern forests[J]. Forest Ecology and Management,2013-01-01,310