四川盆周山地3种珍贵阔叶用材树种木材物理力学性质研究  

Physical and Mechanical Properties of Three Precious Broad-leaved Timber Tree Species Grown in Mountainous Areas Surrounding Sichuan Basin

作　　者：李晓清[1] 龙汉利[1] 张炜[1] 辜云杰[1] 宋鹏[1] 

机构地区：[1]四川省林业科学研究院,四川成都610081

出　　处：《西部林业科学》2013年第1期20-24,共5页Journal of West China Forestry Science

基　　金：国家林业局公益性行业专项"盆周山地珍贵用材树种良种选育与培育技术研究(200904044)"

摘　　要：桢楠、红椿、香樟是四川盆周山地珍贵的乡土阔叶用材树种。对这3个树种林木木材物理力学性质的测定分析表明,94年生的桢楠林木木材基本密度达到0.52 g.cm-3,10年生的红椿林木木材的基本密度为0.43g.cm-3,26年生的香樟林木的木材基本密度为0.41 g.cm-3。桢楠、红椿、香樟林木木材的综合强度分别为151.8 Mpa(中等)、113.8 Mpa(低)和87.3 Mpa(低)。桢楠、红椿、香樟林木木材的顺纹抗压强度和抗弯强度的强重比总和分别为2 919(高级)、2 647(高级)和2 129(中级)。综合评价3个树种林木木材的物理力学性质,94年生的桢楠林木木材材质最优,其次为10年生的红椿林木,再其次为26年生的香樟林木。Phoebe zhennan, Toona ciliata and Cinamomun camphora were three precious broad-leaved timber tree species grown in mountainous areas surrounding Sichuan basin. The physical and mechanical properties of these three species were determined and analyzed. The timber basic density of 94 years old Phoebe zhennan, 10 years old Toona ciliata and 26 years old Cinamomun camphora were 0. 52 g·cm^-3, 0.43 g·cm^-3 and 0. 41 g·cm^-3 re-spectively. The strength of timber of Phoebe zhennan, Toona ciliata and Cinamomun camphora were 151.8 Mpa, 113.8 Mpa and 87.3 Mpa respectively. The strength-to-weight ratios of compression strength parallel to the grain and bending strength of Phoebe zhennan, Toona ciliata and Cinamomun camphora were 2 919, 2 647 and 2 129 re-spectively. The results of comprehensive evaluation of timber physical and mechanical properties of threes species showed that the best timber quality was 94 years old Phoebe zhennan, next came 10 years old Toona ciliata, and the timber quality of 26 years old Cinamomun camphora was the lowest among the three tree species.

关 键 词：四川盆周山地 桢楠 红椿 香樟 木材物理力学性质 

分 类 号：S718[农业科学—林学]