The Technical Quality of the Wood of Scots Pine (Pinus sylvestris L.) of Diverse Genetic Origin

This work contains the preliminary results of research into the technical quality of the wood from Scots pine trees of diverse genetic origin, grown on an experimental plot at the Forest Experimental Station in Rogów. The following are the parent stands, numbered: 5 (the Tucholskie Forest 130 m a.s.l.), 7 (the Napiwodzko–Ramuckie Forest 145 m a.s.l.), 10 (the Piska Forest 145 m a.s.l.), 12 (the Biała Forest 95 m a.s.l.), 13 (the Namysłowsko–Ostrzeszowskie Forest 190 m a.s.l.), 15 (the Knyszyńska Forest 165 m a.s.l.), and 16 (the Nowotarskie Forest 590 m a.s.l.). The tested wood was obtained in 2018 from trees aged 52 years. The research material came from 100 trees in total. After felling, two logs approximately 0.5 m in length were cut from each tree. The height on the tree from which the material was taken ranged from breast height (1.3 m) to approximately 2.5 m. Next, planks were cut from the logs in a north–south direction; these were precisely described and then left to season. The work included the measurement and statistical analysis of one physical property, wood density (kg/m3), and of the following mechanical properties: compressive strength along the fibres, Rc12 (MPa); static bending strength, Rg12 (MPa); modulus of elasticity under static bending, Eg12 (MPa); and indices of strength quality of the tested mechanical properties, JRc12, JRg12, and JEg12 (km). The origin of the logs was shown to have a significant influence on wood density, compressive strength, static bending strength, and modulus of elasticity under static bending. The highest mean density was found for trees originating from stand 10 (537 kg/m3). The highest values of compressive strength were obtained for trees originating from stands 5 (45 MPa), and the highest static bending strength and modulus of elasticity under static bending were obtained for trees originating from stand 12 (102 and 9825 MPa, respectively).

[1]  W. Ciurzycki,et al.  The Wood of Scots Pine (Pinus sylvestris L.) from Post-Agricultural Lands Has Suitable Properties for the Timber Industry , 2020, Forests.

[2]  J. Aleinikovienė,et al.  Scots Pine and Norway Spruce Wood Properties at Sites with Different Stand Densities , 2020 .

[3]  P. Kozakiewicz,et al.  Comparison of dendrometric features of Scots pine trees and wood density from one of genetic origin obtained from the provenance surface in Forest Research Institute in Rogów , 2019, Annals of WULS, Forestry and Wood Technology.

[4]  BDL , 2019, Springer Reference Medizin.

[5]  A. Hebda,et al.  Genetic characteristics of Scots pine in Poland and reference populations based on nuclear and chloroplast microsatellite markers , 2017 .

[6]  A. Tomczak,et al.  Wytrzymałość na ściskanie wzdłuż włókien drewna sosny zwyczajnej uszkodzonej i nieuszkodzonej przez wiatr , 2014 .

[7]  H. Lachowicz,et al.  Zmienność gęstości umownej drewna sosny zwyczajnej (Pinus sylvestris L.) w zależności od wybranych czynników , 2013 .

[8]  P. Horácek,et al.  Evaluation of Stiffness and Strength of Scots Pine Wood Using Resonance Frequency and Ultrasonic Techniques , 2013 .

[9]  H. Lachowicz,et al.  Analiza zmienności gęstości umownej drewna sosny zwyczajnej (Pinus sylvestris L.) wzdłuż wysokości pnia w zależności od wybranych czynników , 2012 .

[10]  A. Tomczak,et al.  Comparison of selected physical properties of the juvenile and mature wood of Scots pine (Pinus sylvestris L.) from mature stands. , 2010 .

[11]  W. Grzywiński,et al.  Quality of Scots pine (Pinus sylvestris L.) wood: Part I. Characteristics of selected wood traits and properties affecting its quality. , 2009 .

[12]  Liang Shan-qing,et al.  Comparative study on three dynamic modulus of elasticity and static modulus of elasticity for Lodgepole pine lumber , 2007 .

[13]  Shanqing Liang,et al.  Comparative study on three dynamic modulus of elasticity and static modulus of elasticity for Lodgepole pine lumber , 2007, Journal of Forestry Research.

[14]  W. Barzdajn Zmiennosc cech taksacyjnych sosny zwyczajnej [Pinus sylvestris L.] polskich pochodzen w doswiadczeniu proweniencyjnym z roku 1985 w Nadlesnictwie Zielonka , 2006 .

[15]  J. Labokas Properties of common hawthorn (Crataegus monogyna Jacq.) populations. , 2002 .

[16]  T. Wodzicki Natural factors affecting wood structure , 2001, Wood Science and Technology.

[17]  M. Giertych Zmiennosc proweniencyjna sosny zwyczajnej [Pinus sylvestris L.] w Polsce , 1997 .

[18]  P. Paschalis Zmienność jakości technicznej drewna sosny pospolitej we wschodniej części Polski , 1980 .

[19]  P. Paschalis Variation in Scots pine wood quality in eastern Poland. , 1980 .

[20]  Physical and mechanical properties of wood � Test methods for small clear wood specimens , 2022 .