Assessing the wood quality of interior spruce (Picea glauca × P. engelmannii): variation in strength, relative density, microfibril angle, and fiber length
Abstract
A dynamic interrelationship exists among wood density and fiber traits (tracheid length and microfibril angel, MFA) and the ultimate wood strength properties. Moreover, many of the basic fundamental wood attributes are heavily influenced by crown size and architecture. In an attempt to examine this interplay, we thoroughly characterized 60 interior spruce (Picea glauca × P. engelmannii) trees sampled in three age classes from four sites in central British Columbia. Breast height discs were taken, and relative wood density was measured along two radii. Tracheid length was assessed on isolated 5 years increments from pith to bark at breast height for each tree, as was MFA. Segmented regression was used to identify the “juvenile to mature wood” transition point, which revealed transition ages of 9.4 and 15.1 years for wood density and MFA, respectively, while fiber length continued to elongate until near 60 years of age. The flexural properties, modulus of elasticity (MoE) and modulus of rupture (MoR), were also quantified in the 60 individuals and found to be best predicted by VFV, a measure of tree vigor, and not the basic wood attributes. These findings imply that long crowns carrying large amounts of foliage, VFV, negatively impact wood strength in interior spruce.
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Articles in the same Issue
- Frontmatter
- Original Articles
- Acid hydrolysis of O-acetyl-galactoglucomannan in a continuous tube reactor: a new approach to sugar monomer production
- Preparation and characterization of activated carbon fibers from liquefied wood by KOH activation
- Water vapour sorption of wood modified by acetylation and formalisation – analysed by a sorption kinetics model and thermodynamic considerations
- Scanning UV microspectrophotometry as a tool to study the changes of lignin in hydrothermally modified wood
- Assessing the wood quality of interior spruce (Picea glauca × P. engelmannii): variation in strength, relative density, microfibril angle, and fiber length
- Inverse determination of thermal conductivity in lumber based on genetic algorithms
- Influence of hot-water extraction on ultrastructure and distribution of glucomannans and xylans in poplar xylem as detected by gold immunolabeling
- Mode of action of brown rot decay resistance in phenol-formaldehyde-modified wood: resistance to Fenton’s reagent
- Stilbene impregnation retards brown-rot decay of Scots pine sapwood
- Negative gravitropism of Ginkgo biloba: growth stress and reaction wood formation
Articles in the same Issue
- Frontmatter
- Original Articles
- Acid hydrolysis of O-acetyl-galactoglucomannan in a continuous tube reactor: a new approach to sugar monomer production
- Preparation and characterization of activated carbon fibers from liquefied wood by KOH activation
- Water vapour sorption of wood modified by acetylation and formalisation – analysed by a sorption kinetics model and thermodynamic considerations
- Scanning UV microspectrophotometry as a tool to study the changes of lignin in hydrothermally modified wood
- Assessing the wood quality of interior spruce (Picea glauca × P. engelmannii): variation in strength, relative density, microfibril angle, and fiber length
- Inverse determination of thermal conductivity in lumber based on genetic algorithms
- Influence of hot-water extraction on ultrastructure and distribution of glucomannans and xylans in poplar xylem as detected by gold immunolabeling
- Mode of action of brown rot decay resistance in phenol-formaldehyde-modified wood: resistance to Fenton’s reagent
- Stilbene impregnation retards brown-rot decay of Scots pine sapwood
- Negative gravitropism of Ginkgo biloba: growth stress and reaction wood formation