Hornbeam is one of the most important species between the broad leaf trees of iran Northern Forests regarding its vast distribution and large percentage of coverage. For this purpose, nine normal hornbeam trees from three different elevation altitudes (Mashelak forest) located at Noshahr city (300, 750, 1350 meter) in western part of Mazandaran province were selected. From each tree, three disks were selected at beast height, 5 m and 10 m of stem height. According to the relegated standard (ISO-3131) the specimens were prepared from these disks to measure the main properties such as oven-dry density, basic density, volumetric shirinkage and volumetric swelling and then date were statistically analyzed. Anova indicated that there is significant difference between altitude indexes and annual ring width, while these factors hadn’t effect on the physical properties.
کلید واژگان :Carpinus betulus, Ovendry density, basic density, volumetric shrinkage, volumetric swelling
ارزش ریالی : 600000 ریال
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