DOI: 10.1016/j.foreco.2016.02.004
Scopus记录号: 2-s2.0-84957899761
论文题名: Fire severity and cumulative disturbance effects in the post-mountain pine beetle lodgepole pine forests of the Pole Creek Fire
作者: Agne M.C. ; Woolley T. ; Fitzgerald S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 366 起始页码: 73
结束页码: 86
语种: 英语
英文关键词: Bark beetles
; Compound disturbances
; Dendroctonus ponderosae
; Disturbance interactions
; Fire ecology
; Pinus contorta
Scopus关键词: Ecology
; Ecosystems
; Fires
; Fuels
; Poles
; Bark beetle
; Compound disturbances
; Dendroctonus ponderosae
; Fire ecology
; Pinus contorta
; Forestry
; beetle
; coniferous forest
; ecosystem resilience
; environmental disturbance
; fire behavior
; montane forest
; mortality
; stand structure
; Oregon
; United States
; Coleoptera
; Dendroctonus ponderosae
; Pinus contorta
; Pinus mugo
; Scolytinae
英文摘要: Recent large scale mountain pine beetle (Dendroctonus ponderosae Hopkins, MPB) outbreaks have created concern regarding increased fuel loadings and exacerbated fire behavior and have prompted a desire to understand the effects of sequential disturbances on the landscape. However, previous research has focused on quantifying fuel loadings and using operational fire behavior models, rather than direct field measurements, to understand changes in fire severity following MPB. The 2012 Pole Creek Fire in central Oregon partially occurred in gray stage (8-15 years post-MPB epidemic) lodgepole pine forests. We examined the combined effects of MPB and fire disturbances on stand structure, and investigated the influence of previous MPB severity and fire weather on subsequent fire severity and cumulative disturbance severity. We randomly selected and installed 52 plots over a gradient of MPB and fire severity combinations and measured stand structure and fire severity characteristics. Fire severity metrics representing both crown and surface fire decreased with increased MPB severity under extreme burning conditions, following expected trends for crown fire severity, but not surface fire severity. Cumulative basal area mortality increased with MPB severity under moderate burning conditions, while other cumulative disturbance severity metrics were unrelated or weakly related to MPB severity. High severity crown fire was common despite hypothesized low canopy fuel loadings during the gray stage, indicating the importance of understanding variable mortality density of MPB outbreaks. Although long-term studies are needed to understand ecosystem recovery trajectories over time, there was no indication that a loss of ecosystem resilience occurred as a result of two sequential disturbances in this landscape. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65018
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Engineering, Resources, and Management, Oregon State University, 280 Peavy Hall, Corvallis, OR, United States; The Nature Conservancy, 114 N. San Francisco Street #205, Flagstaff, AZ, United States
Recommended Citation:
Agne M.C.,Woolley T.,Fitzgerald S.. Fire severity and cumulative disturbance effects in the post-mountain pine beetle lodgepole pine forests of the Pole Creek Fire[J]. Forest Ecology and Management,2016-01-01,366