Relationship Between Altitude Index and Wood Properties of Pinus Eldarica Medw (Case Study in North of Iran)

Authors : Majid KIAEI, Ahmad SAMARIHA

Pages : 911-918

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Publication Date : 2011-12-16

Article Type : Research Paper

Abstract :In the present study, the biometry insert ignore into journalissuearticles values(tracheid length and tracheid cell wall thickness);, physical insert ignore into journalissuearticles values(oven dry density, basic density, volumetric shrinkage, and volumetric swelling);, and mechanical properties insert ignore into journalissuearticles values(static bending insert ignore into journalissuearticles values(MOR);, and compressive strength paralel to the grain); of eldar pine insert ignore into journalissuearticles values(Pinus eldarica Medw); was investigated as a function of altitude index. For this purpose, eighteen normal pine trees from three altitudes such as 500 insert ignore into journalissuearticles values(low altitude);, 1200 insert ignore into journalissuearticles values(intermediate altitude);, and 1400 meter insert ignore into journalissuearticles values(high altitude); that located in the forestry of Western Mazandran province insert ignore into journalissuearticles values(in north of Iran); was selected. Disks and logs of wood were sawn from the trunk 1-2 m height of trees. The results of statistical analyses showed that the altitude index was an important factor influencing on the biometry, physical and mechanical properties of eldar pine. The wood density, volume shrinkage, volume swelling, tracheid length, cell wall thickness, modulus of rupture, and compressive parallel to the grain in intermediate altitude is more than other altitudes classes. 
Keywords : Pinus eldarica Medw, altitude, wood biometry, wood physical, wood mechanical properties