The occurrence and size of false heartwood in beech timber

• Autorzy: Michalec Krzysztof , Wąsik Radosław , Gach Monika

Identyfikatory

DOI

10.12841/wood.1644-3985.385.08

• Języki publikacji: EN

Abstrakty

EN

The aim of this study was to analyse the occurrence and size of false heartwood in beech timber over the lower and upper log faces. The research was carried out on 350 beech trunks where the presence of false heartwood was found on at least one of the log faces. The research material came from the Jarosław and Lesko Forest District (the Regional Directorate of the State Forests (RDSF) in Krosno) and the Pińczów Forest District (RDSF Radom). The following measurements were taken on selected logs: the mean bottom diameter, the mean upper diameter, the length of the analysed trunks, the maximum diameter of the false heartwood at both ends. As a result of the research, it was found that the maximum diameter of false heartwood on the beech log faces ranges from 30% to 40%, and a statistical test showed no significant difference in the extent of the defect between the lower and the upper face (t = -0.389; df = 612; p-value = 0.697). An analysis of the presence of the examined feature on the log faces showed that there were cases in which false heartwood appeared only over the lower face or only over the upper one. It was also noted that almost half of the examined logs had a larger diameter of the defect over the upper face than over the lower one. This study also examined the existence of a correlation between the diameter of the log face, log length and the percentage of the defect. The statistical test showed no significant correlation for both the lower and the upper face and the log length.

Słowa kluczowe

EN

lower log face; upper log face; timber classification; wood defects; red heartwood

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2022
• Tom: Vol. 65, nr 209
• Strony: art. no. 1644--3985.385.08
• Opis fizyczny: Bibliogr. 23 poz., tab., wykr.

Twórcy

autor

Michalec Krzysztof

• Department of Forest Utilization, Engineering and Forest Techniques, University of Agriculture in Krakow, Krakow, Poland

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

autor

Wąsik Radosław

• Department of Forest Utilization, Engineering and Forest Techniques, University of Agriculture in Krakow, Krakow, Poland

• https://orcid.org/0000-0003-2725-0395

autor

Gach Monika

• Department of Forest Utilization, Engineering and Forest Techniques, University of Agriculture in Krakow, Krakow, Poland

• https://orcid.org/0000-0001-6082-3824

Bibliografia

• Albert L., Hofmann T., Németh Z. I., Rétfalvi T., Koloszár J., Varga S., Csepregi I. [2003]: Radial variation of total phenol content in beech (Fagus sylvatica L.) wood with and without red heartwood. Holz als Roh-und Werkstoff 61 [3]: 227-230. DOI: 10.1007/S00107-003-0381-x
• Arač K., Kranjec Orlović J., Diminić D. [2021]: Effect of fungus Meripilus giganteus (Pers.) P. Karst. on occurrence and development of false heartwood and rot in Fagus sylvatica L. round wood. Croatian Journal of Forest Engineering 42 [3]: 529–542. DOI: 10.5552/crojfe.2021.885
• Gejdoš M., Suchomel J., Danihelová Z. [2021]: Analysis of Qualitative features of Beech and Oak trunks as a determinant of the quality assessment. Forests 12: 15. DOI: 10.3390/f12010015
• Karaszewski Z., Bembenek M., Mederski P.S., Szczepańska-Alvarez A., Giefing D.F., Węgiel A. [2013a]: Linear relations between defect frequency and volume of beech logs. Ann. WULS – SGGW Forestry and Wood Technology 83: 32–36
• Karaszewski Z., Bembenek M., Mederski P.S., Szczepańska-Alvarez A., Byczkowski R., Kozłowska A., Michnowicz K., Przytuła W., Giefing D.F. [2013b]: Identifying beech round wood quality – distributions and the influence of defects on grading. Drewno-Wood 56 [189]: 39-54. DOI: 10.12841/wood.1644-3985.041.03
• Kimbar R. [2011]: Wady drewna (Wood defects). Osie
• Knoke T. [2002]: Value of complete information on red heartwood formation in beech (Fagus sylvatica). Silva Fennica 36 [4]: 841–851
• Knoke T. [2003]: Predicting red heartwood formation in beech trees (Fagus sylvatica L.). Ecol. Model. 169: 295–312
• Kot S.M., Jakubowski J., Sokołowski A. [2007]: Statystyka. (Statistics). Difin, Warszawa
• Kowalik E. [2008]: Czy możemy zapobiegać fałszywej twardzieli? (Can we prevent false heartwood?) Las Polski 5: 18–19
• Krzysik F. [1974]: Nauka o drewnie (Wood science). PWN, Warszawa
• Kurek T. [2011]: Buk w kłodach. (Beech in logs). Las Polski 18: 20–21
• Pöhler E., Klingner R., Künniger T. [2006]. Beech (Fagus sylvatica L.) – Technological properties, adhesion behaviour and colour stability with and without coatings of the red heartwood. Annals of Forest Science 63 [2]: 129–137. DOI: 10.1051/forest:2005105
• Prka M., Zečić Ž., Krpan A.P.B., Vusić D. [2009]: Characteristics and share of European Beech False Heartwood in Felling Sites of Central Croatia. Croatian Journal of Forest Engineering 30 [1]: 37–49
• Račko V., Čunderlík I. [2012]: The effect of some factors on the red heart formation in beech trees. Ann. WULS – SGGW Forestry and Wood Technology 79: 197–200
• Shahverdi M., Dashti H., Taghiyari H. R., Heshmati S., Gholamiyan H., Hossein M.A. [2013]: The Impact of red heartwood on drying characteristics and mass transfer coefficients in beech wood. Austrian Journal of Forest Science 130 [2]: 85–101
• Sorz J., Hietz P. [2008]: Is oxygen involved in beech (Fagus sylvatica) red heartwood formation? Trees 22: 175–185. DOI: 10.1007/s00468-007-0187-2
• Trenčiansky M., Lieskovský M., Merganič J., Šulek R. [2017]: Analysis and evaluation of the impact of stand age on the occurrence and metamorphosis of red heartwood. iForest 10: 605-610. DOI: 10.3832/ifor2116-010
• Wernsdörfer H., Constant T., Mothe F., Badia M. A., Nepveu G., Seeling U. [2005]: Detailed analysis of the geometric relationship between external traits and the shape of red heartwood in beech trees (Fagus sylvatica L.). Trees 19 [4]: 482–491. DOI: 10.1007/s00468-005-0410-y
• Wernsdörfer H., Le Moguédec G., Constant T., Mothe F., Nepveu G., Seeling U. [2006]: Modelling of the shape of red heartwood in beech trees (Fagus sylvatica L.) based on external tree characteristics. Ann. For. Sci. 63: 905–913. DOI: 10.1051/forest:2006074
• List of standards
• EN 1309-3:2018 Round and sawn timber - Methods of measurements - Part 3: Features and biological degradations. CEN, Brussels
• Warunki techniczne. 2019a. Drewno wielkowymiarowe liściaste. Załącznik nr 6 do Zarządzenia nr 51 DGLP z dnia 30 września 2019 r. [Technical conditions. 2019a. Large-sized deciduous timber. Appendix No. 6 to Regulation No. 51 of the General Directorate of State Forests, of 30 September 2019]
• Warunki techniczne. 2019b. Wady drewna. Załącznik nr 3 do Zarządzenia nr 51 DGLP z dnia 30 września 2019 r. [Technical conditions. 2019b. Wood defects. Appendix No. 3 to Regulation No. 51 GDSF of the General Directorate of State Forests, of 30 September 2019]

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).