DOI: 10.1016/j.foreco.2014.09.034
Scopus记录号: 2-s2.0-84949146841
论文题名: Species composition influences management outcomes following mountain pine beetle in lodgepole pine-dominated forests
作者: Pelz K.A. ; Rhoades C.C. ; Hubbard R.M. ; Battaglia M.A. ; Smith F.W.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 336 起始页码: 11
结束页码: 20
语种: 英语
英文关键词: Bark beetles
; Fuel management
; Lodgepole pine
; Mountain pine beetle
; Rocky mountains
; Subalpine fir
Scopus关键词: Fire hazards
; Fuels
; Hazards
; Landforms
; Bark beetle
; Fuel management
; Lodgepole pine
; Mountain pine beetle
; Rocky Mountains
; Sub-alpine fir
; Forestry
; beetle
; bulk density
; canopy
; coniferous forest
; data set
; forest fire
; fuelwood
; species diversity
; Abies Lasiocarpa
; Forest Management
; Insects
; Mountains
; Pinus
; Pinus Contorta
; Colorado
; United States
; Wyoming
; Abies lasiocarpa
; Coleoptera
; Pinus contorta
; Pinus mugo
; Scolytinae
英文摘要: Mountain pine beetle outbreaks have killed lodgepole pine on more than one million hectares of Colorado and southern Wyoming forest during the last decade and have prompted harvest operations throughout the region. In northern Colorado, lodgepole pine commonly occurs in mixed stands with subalpine fir, Engelmann spruce, and aspen. Variation in tree species composition will influence structure, fuel profiles and fire hazard as forests recover from bark beetle outbreaks, and this diversity has implications for design and implementation of fuel reduction treatments. We used stand inventory data to predict forest structure and fuel loads starting after needle fall through one century after bark beetle infestation for three lodgepole pine-dominated forest types (pine, pine with aspen, pine with fir and spruce), and compared simulated effects of no-action and fuel reduction treatments (thinning, broadcast burning). In pine stands mixed with significant density of fir and spruce, the high canopy bulk density and low canopy base height increases passive and active crown fire hazards compared to stands with few shade tolerant trees. In contrast, stands of pine mixed with aspen had lower canopy bulk density and active crown fire hazard. All three forest types had high snag and coarse woody debris loads. Thinning and broadcast burning reduced canopy fuels in all forest types for several decades, but had the largest effect in forests with abundant fir. Burning temporarily reduced fine woody fuel, and caused a longer-term reduction in coarse wood and duff. Overall, these simulations indicate that management aimed at reducing canopy fuels in beetle-killed lodgepole pine forests should prioritize stands with high densities of overstory and understory fir and spruce. Forest growth following treatment requires frequent stand manipulation (as often as every 20. years) to maintain reduced fuel loads, and since such treatments are expensive and likely not analogous to natural disturbances these activities are most appropriate where resource and infrastructure protection and human safety concerns are high. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65619
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest and Rangeland Stewardship, Colorado State University, United States; U.S.D.A. Forest Service, Rocky Mountain Research Station, Fort Collins, CO, United States
Recommended Citation:
Pelz K.A.,Rhoades C.C.,Hubbard R.M.,et al. Species composition influences management outcomes following mountain pine beetle in lodgepole pine-dominated forests[J]. Forest Ecology and Management,2015-01-01,336