Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

ISSN:1644-0722, e-ISSN:2450-7997

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original articleIssue 19 (4) 2020 pp. 225–231

Jarosław Szaban, Mariola Kornas

Katedra Użytkowania Lasu, Uniwersytet Przyrodniczy w Poznaniu ul. Wojska Polskiego
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CHANGES IN VOLUME, GRADE AND VALUE IN POPLAR TIMBER DEPENDING ON TIMBER SIZE VARIANTS

Abstract

The aim of the paper was to analyse the impact of different cut-to-length variants on changes in the volume, grade and value of poplar timber. The impact has been determined based on analyses of 50 poplars harvested as long timber. Next, a hypothetical division of long timber into four length variants was performed: 3-meter, 4-meter, 5-meter, and 6-meter logs. The assortments remaining after cutting were qualified as medium-sized timber, either S2 or S4. The study material was harvested in the Czarnobór Forest District. As a result of cutting the long timber into logs, there was a change in the share of individual grades represented, with some of the timber classified to higher grades. However, this did not increase the timber value. Instead, cutting the timber into logs led to a decrease in its overall value. The longer the logs, the greater the decrease in value,
ranging from 8.85% for 3-m logs to 18.47% for 6-m logs. Furthermore, the volume of the logs was lower compared to the long timber they were obtained from. The study demonstrated that long timber is the most advantageous form in terms of its volume, shares of individual grades and overall value.
 

Keywords: large-sized timber, saw logs, cut-to-length (CTL), timber grade, cutting to length
pub/.pdf Full text available in english in Adobe Acrobat format:
http://www.forestry.actapol.net/issue4/volume/24_4_2020.pdf

https://doi.org/10.17306/J.AFW.2020.4.24

For citation:

MLA Szaban, Jarosław, and Mariola Kornas. " [CHANGES IN VOLUME, GRADE AND VALUE IN POPLAR TIMBER DEPENDING ON TIMBER SIZE VARIANTS]." Acta Sci.Pol. Silv. 19.4 (2020): . https://doi.org/10.17306/J.AFW.2020.4.24
APA Szaban, J., Kornas, M. (2020). [CHANGES IN VOLUME, GRADE AND VALUE IN POPLAR TIMBER DEPENDING ON TIMBER SIZE VARIANTS]. Acta Sci.Pol. Silv. 19 (4), https://doi.org/10.17306/J.AFW.2020.4.24
ISO 690 SZABAN, Jarosław, KORNAS, Mariola. [CHANGES IN VOLUME, GRADE AND VALUE IN POPLAR TIMBER DEPENDING ON TIMBER SIZE VARIANTS]. Acta Sci.Pol. Silv., 2020, 19.4: . https://doi.org/10.17306/J.AFW.2020.4.24
Streszczenie w języku polskim:
http://www.forestry.actapol.net/tom19/zeszyt4/streszczenie-24.html