<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The study material of Scots pine sample trees originated from five different forest site types (<italic>Cladonia, Calluna, Myrtillus,</italic> natural raised bog and drained raised bog) in Estonia. Altogether, 60 trees were sampled from 10 stands. From these, test disks and sample blocks (1.2 m in length) were cut at 1.3 m height, 1/2 of tree height and 3/4 of tree height. We analysed the effect of forest site type on the growth of tree ring width, proportion of late- and heartwood, oven-dry density, bending and compression strength and wood hardness. Wood properties in stands of the same age showed great variability. Significant differences were found in the wood properties between site types. Wood density and strength characteristics were higher in samples from heath site types than from the sites more optimal for pine (e.g., <italic>Myrtillus</italic>). The quality of the wood from peatland stands was lower than from trees grown on mineral soil. The decreasing trend in strength properties towards the top of trees was steeper in the wood formed under poor nutrient conditions. Latewood proportion increased with tree age. However, in the case of equal latewood percentages, heartwood density was higher than sapwood density.</p>
</abstract>

The study material of Scots pine sample trees originated from five different forest site types (Cladonia, Calluna, Myrtillus, natural raised bog and drained raised bog) in Estonia. Altogether, 60 trees were sampled from 10 stands. From these, test disks and sample blocks (1.2 m in length) were cut at 1.3 m height, 1/2 of tree height and 3/4 of tree height. We analysed the effect of forest site type on the growth of tree ring width, proportion of late- and heartwood, oven-dry density, bending and compression strength and wood hardness. Wood properties in stands of the same age showed great variability. Significant differences were found in the wood properties between site types. Wood density and strength characteristics were higher in samples from heath site types than from the sites more optimal for pine (e.g., Myrtillus). The quality of the wood from peatland stands was lower than from trees grown on mineral soil. The decreasing trend in strength properties towards the top of trees was steeper in the wood formed under poor nutrient conditions. Latewood proportion increased with tree age. However, in the case of equal latewood percentages, heartwood density was higher than sapwood density.

Effect of growth conditions on wood properties of Scots pine (<italic>Pinus sylvestris</italic> L.)

Chair of Forest Management Planning and Wood Processing Technologies, Institute of Forestry and Rural Engineering

Forestry Studies

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effect of growth conditions on wood properties of Scots pine ( L.)

The study material of Scots pine sample trees originated from five different forest site types (Cladonia, Calluna, Myrtillus, natural raised bog and drained...

Effect of growth conditions on wood properties of Scots pine (Pinus sylvestris L.)

Article Category: Research paper

Publié en ligne: 04 juin 2022

Pages: 176 - 187

Reçu: 02 déc. 2021

Accepté: 27 déc. 2021

DOI: https://doi.org/10.2478/fsmu-2021-0019

Mots clés
wood density, latewood, bending strength, compression strength, hardness

© 2021 Regino Kask et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effect of growth conditions on wood properties of Scots pine (Pinus sylvestris L.)

Article Category: Research paper

Publié en ligne: 04 juin 2022

Pages: 176 - 187

Reçu: 02 déc. 2021

Accepté: 27 déc. 2021

DOI: https://doi.org/10.2478/fsmu-2021-0019

Mots cléswood density, latewood, bending strength, compression strength, hardness

© 2021 Regino Kask et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
wood density, latewood, bending strength, compression strength, hardness