The effect of the late wood share upon density of the Polish pine wood as a function of its origin

• Autorzy: Chuchała Daniel , Orłowski Kazimierz , Krzosek Sławomir
• Języki publikacji: EN

Abstrakty

EN

The effect of the annual growth and the late wood share upon density of the Polish pine wood as a function of its origin. In the paper the variations of density of Polish pine (Pinus sylvestris L.) in a function of the late wood share in the annual growth with regard to the wood origin are presented. The measurement of density of wood was performed by using the stereometric method described in the works by Krzysik. This method consists in measurements the volume of the sample by determination of the various dimensions (length, width, height), and weighting of the sample mass. Nevertheless, measurements of the late wood share in the annual growth had been carried out according to own methodology which based on the classical method described in the work by Krzysik. The comparison was made for pine from natural forests derived from four different regions of Poland. The effect of the share of the late wood on the density Polish pine wood is observed. However, Pearson‘s r correlation coefficient values depend strongly on the examined wood origins.

Słowa kluczowe

EN

wood origin; density of wood; annual growth; late wood share

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2012
• Tom: No. 77
• Strony: 118--124
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Chuchała Daniel

autor

Orłowski Kazimierz

autor

Krzosek Sławomir

Bibliografia

• 1.CHUCHALA D., ORLOWSKI K., KRZOSEK S. (2011): The preparation method of experimental studies of the wood sawing process, Annals of Warsaw University of Life Sciences. - 2011 - (Forestry and Wood Technology), No73: 199–202.
• 2.KRZOSEK S. (2009): Wytrzymałościowe sortowanie polskiej tarcicy konstrukcyjnej różnymi metodami. Wydawnictwo SGGW, Warszawa.
• 3.KRZYSIK F., Nauka o drewnie. PWN, Warszawa, 1974.
• 4.KUKIEŁKA L., Podstawy badań inżynierskich. PWN, Warszawa 2002.
• 5.NIKIEL G.: Opracowanie statystyczne wyników badań doświadczalnych z wykorzystaniem programu ReGreg. Opracowanie niepublikowane, Bielsko - Biała 2001.
• 6.ORLOWSKI, K.A., PAŁUBICKI, B. (2009) Recent progress in research on the cutting process of wood. A review COST Action E35 2004–2008: Wood machining – micromechanics and fracture. Holzforschung, 63: 181–185.
• 7.CRITICAL VALUE TABLE FOR PEARSON’S CORRELATION COEFFICIENT. http://www.gifted.uconn.edu/siegle/research/Correlation/corrchrt.htm (access June, 2012).
• 8.PEARSON PRODUCT–MOMENT CORRELATION COEFFICIENT. http://en.wikipedia.org/wiki/Pearson_product-moment_correlation_coefficient (access June, 2012).