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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。
The data of annual ring width and annual ring density were obtained by using I-69 poplar wood as sample and tree ring annual image analysis system and tree ring analysis system. The radial variation and axial variation of composition were analyzed. The results showed that the radial variation of I-69 poplar wood density increased with the increase of tree age, and the maximum density fluctuated greatly. The minimum density increased with the increase of tree age. The early wood density and late wood density increased with the increase of tree age. The composition of each component of the wheel radial variation was significant, radial variation between strains was not significant. The composition of annual ring density increased with height, of which the annual ring average density, earlywood density and minimum density increased less, the annual ring maximum density and latewood density increased more; in contrast, Wood density radial variation greater than the axial variation.