DOI: 10.1016/j.foreco.2012.10.020
Scopus记录号: 2-s2.0-84871840100
论文题名: Low-severity fires increase susceptibility of lodgepole pine to mountain pine beetle outbreaks in Colorado
作者: Kulakowski D. ; Jarvis D.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 289 起始页码: 544
结束页码: 550
语种: 英语
英文关键词: Colorado
; Dendroctonus ponderosae
; Disturbance interactions
; Forest disturbance
; Pinus contorta
; Subalpine forests
Scopus关键词: Colorado
; Dendroctonus ponderosae
; Forest disturbances
; Pinus contorta
; Subalpine forests
; Ecosystems
; Fires
; Forestry
; beetle
; coniferous tree
; disturbance
; ecosystem dynamics
; fire behavior
; forest ecosystem
; forest management
; landscape
; policy making
; population outbreak
; resource management
; subalpine environment
; Abies Lasiocarpa
; Colorado
; Ecosystems
; Fires
; Forestry
; Forests
; Pinus Contorta
; Colorado
; United States
; Coleoptera
; Dendroctonus ponderosae
; Hexapoda
; Pinus contorta
; Pinus mugo
英文摘要: Both fire and insect outbreaks are critical components of many forest ecosystems and understanding the two-way interactions between these disturbance types is an important goal for researchers, resource managers, and policy makers. Much recent research has focused on understanding the effects of outbreaks on subsequent fires, but the effects of fires on subsequent outbreaks are also important in shaping ecosystem dynamics.In the current study we examined how low-severity fires influence susceptibility of lodgepole pine to mountain pine beetle (MPB). We examined 607 lodgepole pine trees in stands that were affected by low-severity fire in 2002 and subsequent MPB outbreak in Routt National Forest, Colorado. For each tree we recorded effect by fire (no visible effect; visible effect - i.e. charring), recent effect by MPB (no visible effect; infestation - i.e. presence of MPB entry or exit holes; or mortality), dbh, and age (based on increment core samples).Tree diameter (dbh) was the most important factor in determining susceptibility to MPB such that larger trees were more susceptible to MPB. But once dbh was taken into account, trees that were charred were more likely to have been attacked and killed by MPB. Previous work has found that stand-replacing fires reduce susceptibility of lodgepole pine stands to MPB in these ecosystems. The current results highlight the fact that fires that are below a high threshold of severity and instead injure or otherwise weaken trees, may increase susceptibility to MPB. Fire-affected lodgepole may act as vectors for the spread of outbreaks during moderate outbreak conditions or as refuges during endemic population phases. It is important to consider how low-severity fires, including prescribed burns, may increase forest susceptibility to outbreaks at local to landscape scales. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66850
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Geography, Clark University, Worcester, MA, United States
Recommended Citation:
Kulakowski D.,Jarvis D.. Low-severity fires increase susceptibility of lodgepole pine to mountain pine beetle outbreaks in Colorado[J]. Forest Ecology and Management,2013-01-01,289