DOI: 10.1016/j.foreco.2013.12.026
Scopus记录号: 2-s2.0-84891944467
论文题名: Periodicity of western spruce budworm in Southern British Columbia, Canada
作者: Alfaro R.I. ; Berg J. ; Axelson J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 315 起始页码: 72
结束页码: 79
语种: 英语
英文关键词: Choristoneura freemani
; Choristoneura occidentalis
; Dendrochronology
; Douglas-fir pests
; Insect defoliation
Scopus关键词: Choristoneura freemani
; Choristoneura occidentalis
; Dendrochronology
; Douglas fir
; Insect defoliation
; Climatology
; Global warming
; Timber
; Time series analysis
; Forestry
; coniferous tree
; defoliation
; dendrochronology
; ecosystem dynamics
; environmental disturbance
; forest management
; global warming
; moth
; periodicity
; pest outbreak
; timber
; time series analysis
; Forestry
; Forests
; Meteorology
; Pests
; Pseudotsuga
; British Columbia
; Canada
英文摘要: The western spruce budworm (WSB), ChoristoneuraoccidentalisFreeman), a defoliator of conifers in western North America, causes severe timber losses to forests. In British Columbia, Canada, where the main species damaged is Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, outbreaks of C. occidentalis have been recorded since 1909. However, there is little information on the frequency of outbreaks of this defoliator for previous centuries. This information is needed to establish baselines defining the historic range of variability of this disturbance, to calculate potential depletions in timber supply from defoliation, and to refine forest management plans. Also, precise estimates of budworm recurrence are needed to assess potential ecosystem changes and possible departures from the historic range of this disturbance due to global warming. We used dendrochronology and time series analysis to determine past frequency of spruce budworm outbreaks in southern BC and found that, since the 1500s, outbreaks have been periodic, with a mean return interval of 28. years (95% Confidence Interval 21-35. years). No data was available before the 1500s. We found the number of outbreaks per century, since the 1800s, was fairly constant, with 3-4 outbreaks per century. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66128
Appears in Collections: 影响、适应和脆弱性
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作者单位: Canadian Forest Service, Pacific Forestry Centre, 506 W Burnside Rd, Victoria, BC, Canada; British Columbia Ministry of Forests, Lands and Natural Resource Operations, Cariboo Region, Williams Lake, BC, Canada
Recommended Citation:
Alfaro R.I.,Berg J.,Axelson J.. Periodicity of western spruce budworm in Southern British Columbia, Canada[J]. Forest Ecology and Management,2014-01-01,315