DOI: 10.1016/j.foreco.2017.06.006
Scopus记录号: 2-s2.0-85020752198
论文题名: Modelling the influence of environment on juvenile modulus of elasticity in Pinus radiata grown in Chile
作者: Watt M.S. ; Trincado G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 238
结束页码: 245
语种: 英语
英文关键词: Radiata pine
; Slenderness
; Stiffness
; Velocity
Scopus关键词: Elastic moduli
; Stiffness
; Velocity
; Environmental conditions
; Forest plantation
; Influence of environments
; Key determinants
; Radiata pine
; Slenderness
; Stand-level variables
; Variance components
; Forestry
; biomechanics
; coniferous tree
; elastic modulus
; environmental effect
; juvenile
; stiffness
; Chile
; Pinus radiata
; Radiata
英文摘要: Measurements of modulus of elasticity (E) were taken from Pinus radiata D. Don growing at 88 sites that encompass the range of environmental conditions over which forest plantations have been established in Chile. Using this dataset the objectives of this research were to (i) identify the key determinants of E across sites and (ii) develop a robust tree level model to predict E across the environmental range over which P. radiata is grown in Chile. Variance components analysis showed variation between sites to account for almost twofold more variation in E than variation within sites. Across the studied region, mean site values of E varied widely ranging fourfold from 3.41 to 14.1 GPa, with a mean of 8.52 GPa. The mean within site variation at each site was 4.50 GPa, ranging from 1.50 to 14.6 GPa. Of the climatic and stand level variables used in analyses stem slenderness, S, (tree height/diameter at breast height) exhibited the strongest correlation with E accounting for 43% of the variance in the property. The final model of E at the site level included S and minimum air temperature during May, both of which were positively related to E. This model was extended to the tree level through inclusion of a term that accounted for the random intercept between S and E. This model accounted for 75% of the variation in the data and exhibited little apparent bias. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64223
Appears in Collections: 影响、适应和脆弱性
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作者单位: Scion, PO Box 29237, Fendalton, Christchurch, New Zealand; Instituto de Bosques y Sociedad, Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, Box 567, Valdivia, Chile
Recommended Citation:
Watt M.S.,Trincado G.. Modelling the influence of environment on juvenile modulus of elasticity in Pinus radiata grown in Chile[J]. Forest Ecology and Management,2017-01-01,400