Modeling lumber bending stiffness and strength in natural black spruce stands using stand and tree characteristics

Static bending modulus of rupture (MOR) and modulus of elasticity (MOE) were measured on lumber from trees in the natural and mature black spruce stands grown in Eastern Canada. A sample of total 157 trees from the 90–100-year-old black spruce natural stands covering a range of sites and growing con...

Full description

Saved in:
Bibliographic Details
Published in:Forest ecology and management 2007-04, Vol.242 (2), p.648-655
Main Authors: Liu, Chuangmin, Zhang, S.Y., Cloutier, Alain, Rycabel, Tadeusz
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
bending strength
Bending strength and stiffness
Biological and medical sciences
Black spruce
equations
forest stands
forest trees
Fundamental and applied biological sciences. Psychology
lumber
mathematical models
mechanical properties
Modulus
modulus of elasticity
modulus of rupture
Picea mariana
prediction
regression analysis
Regression model
Stand characteristics
stem form
Synecology
Terrestrial ecosystems
tree and stand measurements
Tree characteristics
wood
wood strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Static bending modulus of rupture (MOR) and modulus of elasticity (MOE) were measured on lumber from trees in the natural and mature black spruce stands grown in Eastern Canada. A sample of total 157 trees from the 90–100-year-old black spruce natural stands covering a range of sites and growing conditions was used for the model development ( n = 102) and validation ( n = 55). A stepwise regression method was employed to identify the best variables for predicting MOE and MOR using stand/tree characteristics and wood properties. Then, regression equations with different explanatory variables were developed to predict lumber bending stiffness and strength. Based on the results of model validation from the independent dataset, the regression models developed were able to predict the lumber bending MOE and MOR satisfactorily, especially for small- and middle-sized trees. The results (equation parameter estimates and predictions) obtained in this study, along with those for plantation-grown black spruce in Eastern Canada, will be highly useful in predicting lumber bending static stiffness and strength for both natural and managed black spruce stands.
ISSN:0378-1127
1872-7042
DOI:10.1016/j.foreco.2007.01.077