Ⅰ-69杨年轮宽度和密度变异规律  

Studies on Variation of Poplar Ⅰ-69 Tree-ring Width and Tree-ring Density

作　　者：王家祥[1] 夏萍[2] 刘盛全[2] 

机构地区：[1]安徽六安职业技术学院,安徽六安237158 [2]安徽农业大学工学院,安徽合肥230036

出　　处：《林业科学研究》2011年第5期641-645,共5页Forest Research

基　　金：安徽省国际科技合作计划项目(10080703031);安徽高校产学研重点项目(kj2009A035)

摘　　要：以Ⅰ-69杨木材为试样,运用树木年轮图像分析系统和树木年轮分析系统获取年轮宽度和年轮密度数据,并对组成成分径向变异和轴向变异规律进行了分析。结果表明:Ⅰ-69杨木材密度的径向变异规律随树龄增加而增大,最大密度波动较大,最小密度随树龄增加总体趋势下降,早材密度、晚材密度随树龄增加而增加;年轮组成成分各项指标株内径向变异极显著,株间径向变异不显著。年轮密度各组成成分随高度增加而增加,其中年轮平均密度、早材密度、最小密度增加量较小,年轮最大密度、晚材密度增加量较大;相对而言,Ⅰ-69杨木材密度径向变异大于轴向变异。Poplar I-69 wood was chosen as the sample, the data of the coinponents of tree-ring width and density were accessed by Tree-Ring Image Analysis System and Tree-Ring Analysis System and the radial and axial varia- tions of the components were analyzed. The results showed that ： the radial variation of the density of poplar I-69 increased along with the tree age. The maximum density fluctuated heavy, the minimum density decreased along with increase of the tree age on the whole. The density of earlywood and latewood increased along with the tree age. The radial variation of the tree-ring components was significant within individual trunk, but no difference among trunks. The components of the tree-ring density increased along with the tree height, there into, the tree-ring average densi- ty, earlywood density and minimum density increased less, while the tree-ring maximum density and latewood density increased more. Comparatively, the radial variation of the density of poplar I-69 was larger than that of the axial variation.

关 键 词：Ⅰ-69杨 年轮宽度 年轮密度 变异 年轮图像 

分 类 号：S781[农业科学—木材科学与技术]