The Quality of Alder Raw Material from Stands Growing in Different Habitats

• Autorzy: Michalec Krzysztof , Zygmunt Robert

Identyfikatory

DOI

10.53502/wood-200620

• Języki publikacji: EN

Abstrakty

EN

A study was carried out to determine the quality of alder raw material growing in different forest habitat types. The research work was conducted in the Włoszczowa Forest District in Poland. Measurements were taken in eight stands growing on three types of forest site: alder moist forest, alder-ash moist forest, and moist forest. In the selected stands, 4-are sample plots were established. In each circular sample plot, the DBH and height of all trees were measured. In the selected trees, the quality of the wood and the type of defects that influenced the result of wood classification were determined in the trunk butt end (on a length of 4 meters). In every other plot, a core was taken from a height of 1.3 m in a randomly selected tree to determine the presence of latent defects. The black alder tested on each site attained very good technical quality. The dominant volume share was that of veneer wood, the largest amount of which was identified in moist forest. Very small amounts of wood of lower quality classes were found. It was found that in less humid habitats than typical alder forests, black alder produces better-quality wood. However, when the borings were taken into account, the proportion of each quality class changed dramatically. Hard rot and soft rot caused wood from the best quality classes to be degraded to lower classes. The percentage of the best-quality wood fell from 60% to 7.57%, while that of the worst-quality wood increased from 5.94% to 40.57%.

Słowa kluczowe

EN

wood classification; wood defects; false heartwood; decay; special wood; alder moist forest; alder-ash moist forest; moist forest

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2025
• Tom: Vol. 68, nr 215
• Strony: Art. no. 200620
• Opis fizyczny: Bibliogr. 21 poz., rys., wykr.

Twórcy

autor

Michalec Krzysztof

• University of Agriculture in Krakow, Krakow, Poland

• https://orcid.org/0000-0001-9989-0688

autor

Zygmunt Robert

• University of Agriculture in Krakow, Krakow, Poland

• https://orcid.org/0000-0003-1936-996X

Bibliografia

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• List of standards
• Warunki techniczne. 2019a. Wady drewna. Załącznik nr 3 do Zarządzenia nr 51 DGLP z dnia 30 września 2019 r. [Technical conditions. 2019a. Wood defects. Appendix No. 3 to Regulation No. 51 GDSF of the General Directorate of State Forests, of 30 September 2019]
• Warunki techniczne. 2019b. Drewno wielkowymiarowe liściaste. Załącznik nr 6 do Zarządzenia nr 51 DGLP z dnia 30 września 2019 r. [Technical conditions. 2019b. Large-sized deciduous timber. Appendix No. 6 to Regulation No. 51 of the General Directorate of State Forests, of 30 September 2019]
• Warunki techniczne. 2019c. Drewno okleinowe. Załącznik nr 8 do Zarządzenia nr 51 DGLP z dnia 30 września 2019 r. [Technical conditions. 2019b. Veneer wood. Appendix No. 8 to Regulation No. 51 of the General Directorate of State Forests, of 30 September 2019]
• Warunki techniczne. 2019d. Drewno średniowymiarowe. Załącznik nr 9 do Zarządzenia nr 51 DGLP z dnia 30 września 2019 r. [Technical conditions. 2019b. Medium-sized timber. Appendix No. 9 to Regulation No. 51 of the General Directorate of State Forests, of 30 September 2019]