香椿人工林和天然林木材材性的比较研究  

Comparative Study on Properties of Toona sinensis Wood from Plantation and Natural Forest

作　　者：骆嘉言[1] 林金国[2] 李大岔 高瑞龙 

机构地区：[1]南京林业大学木材工业学院,江苏南京210037 [2]福建农林大学材料工程学院,福建南平353001 [3]福建省宁德市福口林场,福建宁德352100 [4]福建省福安市林业局,福建福安355000

出　　处：《西北林学院学报》2003年第2期77-79,共3页Journal of Northwest Forestry University

基　　金：福建省自然科学基金(B0110024);福建省教育厅科研基金(JA01052)

摘　　要：对香椿人工林和天然林木材物理力学性质和抽出物含量进行了测定。结果表明,香椿人工林和天然林木材的密度、顺纹抗压强度、抗弯强度和端面硬度均属中等,干缩小;香椿人工林木材除抗弯弹性模量、抗劈力和冲击韧性小于天然林外,其余物理力学性质指标均稍大于天然林,抽出物含量均低于天然林。经差异显著性t检验表明,香椿人工林和天然林木材物理力学性质指标中,抗弯弹性模量、抗劈力和冲击韧性差异显著,其余指标差异不显著。Extractive content, physical and mechanical properties of Toona sinensis wood from plantation and natural forest were determined and analyzed comparatively. The results showed that the density, compression strength parallel to grain, the bending strength and hardness of cross section of Toona sinensis wood from plantation and natural forest all belonged to middle level and their shrinkages all were small. The other physical and mechanical indexes of Toona sinensis wood from plantation were slightly bigger than those from natural forest except that elastic modulus of bending, impact toughness and resistance to cleavage from plantation were less than those from natural forest. Extractive contents of Toona sinensis from plantation were smaller than those from natural forest. Different significant ttest showed that there are significant differences on elastic modulus of bending, impact toughness and resistance to cleavage but no ones on the other indexes between plantation and natural forest. The conclusions provided scientific basis for plantation silviculture and rational and effcient use of Toona sinensis wood.

关 键 词：香椿 人工林 天然林 材性 比较研究 木材物理力学性质 木材抽出物含量 

分 类 号：S792.99[农业科学—林木遗传育种] S781[农业科学—林学]