不同生态条件对人工林杨树木材物理力学性质的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (11): 2012-2018.

不同生态条件对人工林杨树木材物理力学性质的影响

查朝生, 王嘉楠, 方宇, 刘盛全

安徽农业大学林学与园林学院, 合肥 230036

收稿日期:2005-01-25 修回日期:2005-05-31 出版日期:2005-11-15 发布日期:2005-11-15
通讯作者: 刘盛全
基金资助:
国家科技部中法合作先进项目(PRA-BT00-04)、瑞典国际科学基金组织国际科学基金项目(IFS-D/2778-2F)、安徽省自然科学基金项目(01011104)和安徽省优秀青年科技基金资助项目.

Physicomechanical properties of plantation poplar wood under different eco-environments

ZHA Chaosheng, WANG Jianan, FANG Yu, LIU Shengquan

College of Forestry and Gardening, Anhui Agricultural University, Hefei 230036, China

Received:2005-01-25 Revised:2005-05-31 Online:2005-11-15 Published:2005-11-15

摘要/Abstract

摘要： 在施肥与未施肥、淹水与未淹水两种生态条件下,以杨树人工林木材I-69杨为对象,对木材年轮宽度、基本密度、干缩性质、主要力学性质进行了测试,并对数据进行了统计、对比和分析.结果表明,施肥处理后,木材年轮宽度、静态抗弯弹性模量和顺纹抗压强度分别增大0.99%、2.73%和1.06%;全干时和气干时的径向、弦向、体积全干干缩率分别降低了4.2%、7.7%、6.6%、15.6%、6.3%和11.1%;木材密度、抗弯强度、动态抗弯弹性模量则分别降低了2%、1.79%、8.13%.与未淹水相比,季节性淹水对I-69杨木材密度、木材干缩率和力学性质的影响较大,二者差异显著(P＜0.05).其中木材密度、全干时和气干时的径向、弦向、体积干缩率、抗弯强度、抗弯弹性模量以及顺纹抗压强度分别降低了5.5%、11.1%、9.2%、9.6%、16.7%、10.9%、8.5%、24.29%、18.18%和16.81%.

关键词: 施肥处理, 季节性淹水, Ⅰ-69杨, 物理力学性质, 木材变异

Abstract: The measurement of the physicomechanical properties of 9 plantation poplar I-69(Populus deltoides CV.I-69/55)woods under fertilization and seasonal flooding showed that compared with no fertilization,fertilization increased the ring width,static modulus of elasticity,and compressive strength parallel to the grain by 0.99%(P>0.05),2.73%(P<0.05)and 1.06%(P<0.05),while decreased the air-dry radial,tangential,volumetric shrinkage,oven-dry radial,tangential,volumetric shrinkage,basic density,MOR,and dynamic modulus of elasticity by 4.2%,7.7%,6.6%,15.6%,6.3%,11.1%,2%,1.79% and 8.13%,respectively.Seasonal flooding decreased the basic density,air-dry radial,tangential,volumetric shrinkage,oven-dry radial,tangential,volumetric shrinkage,MOR,MOE,and compressive strength parallel to the grain by 5.5%,11.1%,9.2%,9.6%,16.7%,10.9%,8.5%,24.29%,18.18% and 16.81%,respectively,in comparing with non-flooding.

Key words: Fertilization, Seasonal flooding, Poplar I-69, Physicomechanical properties, Wood variation

中图分类号:

S781.29

查朝生, 王嘉楠, 方宇, 刘盛全. 不同生态条件对人工林杨树木材物理力学性质的影响[J]. 应用生态学报, 2005, 16(11): 2012-2018.

ZHA Chaosheng, WANG Jianan, FANG Yu, LIU Shengquan . Physicomechanical properties of plantation poplar wood under different eco-environments[J]. Chinese Journal of Applied Ecology, 2005, 16(11): 2012-2018.

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