DOI: 10.1016/j.foreco.2013.08.035
Scopus记录号: 2-s2.0-84884268987
论文题名: Radial growth of residual overstory trees and understory saplings after mountain pine beetle attack in central British Columbia
作者: Hawkins C.D.B. ; Dhar A. ; Balliet N.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 348
结束页码: 356
语种: 英语
英文关键词: Complex stands
; Dendroctonous ponderosae Hopkins
; Mid-term timber supply
; Pinus contorta var. latifiolia Engelm.
; Release
Scopus关键词: Growth increments
; Hopkins
; Management options
; Management strategies
; Mountain pine beetle
; Pinus contorta
; Release
; Timber supply
; Plants (botany)
; Timber
; Forestry
; age class
; beetle
; bioclimatology
; coniferous tree
; epidemic
; forest management
; growth rate
; growth response
; overstory
; pest control
; pest outbreak
; sapling
; stand dynamics
; timber
; tree ring
; uncertainty analysis
; understory
; Forestry
; Forests
; Plants
; British Columbia
; Canada
英文摘要: There is uncertainty regarding the timing and rate of radial growth of understory saplings and overstory trees in unsalvaged mountain pine beetle (MPB) attacked lodgepole pine stands following one of the largest MPB epidemics in British Columbia (BC). This study was designed to quantify the radial growth response of understory saplings and residual live overstory trees before and after MPB attack. This information is important to assess management options and future timber supply. In total 91 stands were sampled from different age classes and biogeoclimatic sub-zones of central BC. Radial growth was quantified based on five years of tree ring widths immediately preceding the MPB outbreak and five years after attack. Finally, the ratio of area growth was calculated for each tree to describe the change in tree growth following MPB attack. After the death of larger pine trees, healthy vigorous understory species exhibited increased radial growth (percent mean growth increment: MGI) compared to healthy overstory trees. Generally shade tolerant species demonstrated the greatest radial growth among understory species; whereas shade intolerant species had the best growth response among residual live overstory trees. In understory species, the degree of radial growth increased with increased pine mortality while overstory species were not affected by level of MPB attack. This study indicates that radial growth in residual tree species showed a positive response after MPB caused mortality. This may have implications for initiating management strategies and accurate mid-term timber supply projections for MPB killed stands in central BC. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66275
Appears in Collections: 影响、适应和脆弱性
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作者单位: Mixedwood Ecology and Management Program, University of Northern British Columbia, 3333 University Way, Prince George, BC V2N 4Z9, Canada; Yukon Research Centre, Whitehorse, YT Y1A 5K4, Canada; Office of Research and Graduate Programs, University of Northern British Columbia, Canada
Recommended Citation:
Hawkins C.D.B.,Dhar A.,Balliet N.A.. Radial growth of residual overstory trees and understory saplings after mountain pine beetle attack in central British Columbia[J]. Forest Ecology and Management,2013-01-01,310