DOI: 10.1016/j.foreco.2016.03.005
Scopus记录号: 2-s2.0-84960106395
论文题名: Effect of local stand structure on leaf area, growth, and growth efficiency following thinning of white spruce
作者: Omari K. ; MacLean D.A. ; Lavigne M.B. ; Kershaw J.A. ; Jr. ; Adams G.W.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 368 起始页码: 55
结束页码: 62
语种: 英语
英文关键词: Area potentially available
; Current annual volume increment
; Growth efficiency
; Leaf area
; Picea glauca
; Thinning
Scopus关键词: Efficiency
; Annual volumes
; Area potentially available
; Growth efficiency
; Leaf area
; Picea glauca
; Thinning
; Forestry
; coniferous tree
; forest management
; growth rate
; leaf area
; plantation forestry
; stand structure
; stem
; thinning
; Picea
; Picea glauca
英文摘要: We examined the influence of stand structure surrounding individual dominant and codominant trees on leaf area, tree growth, and growth efficiency (stem growth per unit leaf area) in young white spruce (Picea glauca (Moench) Voss) plantations. Objectives were to (i) test the hypothesis that individual tree volume increment and growth efficiency increase with increasing growing space, and (ii) determine the relative importance of growth efficiency and leaf area to stem volume increment in young spruce following thinning. Growing space was expressed as area potentially available (APA) to each tree. Relative current annual volume increment (annual increment divided by the mean increment for the 3 years immediately preceding thinning) increased linearly with increasing APA 2 and 3 years after thinning, supporting our hypothesis that tree volume increment increases with APA. Growth efficiency however, was not related to APA. Leaf area was positively related to APA 3 years after thinning, and current annual volume increment was related to leaf area. Leaf area per tree increased from 17.8 m2 to 29.8 m2 over the 3 years (2011-2013) following thinning and was 16.5-18.7 m2 for unthinned trees over the same period. Growth efficiency decreased from 1.35 to 0.64 dm3 m-2 for thinned trees and from 0.74 to 0.55 dm3 m-2 for unthinned trees from 2010 to 2013. Growth efficiency did not differ between thinned and unthinned trees, but it was significantly lower in year 3 than year 1 after thinning (p = 0.0178) and significantly lower than the prethinning growth efficiency (p = 0.0034). Our results show that thinning increased individual tree volume increment by increasing leaf area of remaining trees and not by increasing their growth efficiency. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64964
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of New Brunswick, Faculty of Forestry and Environmental Management, P.O. Box 4400, Fredericton, NB, Canada; Natural Resources Canada, Canadian Forest Service - Atlantic Forestry Centre, Fredericton, NB, Canada; J.D. Irving, Limited, P.O. Box 5777, 300 Union Street, Saint John, NB, Canada
Recommended Citation:
Omari K.,MacLean D.A.,Lavigne M.B.,et al. Effect of local stand structure on leaf area, growth, and growth efficiency following thinning of white spruce[J]. Forest Ecology and Management,2016-01-01,368