坡向对大叶相思人工林生长和材质的影响

摘要

Growth feature, physical and mechanical properties of Acacia acuriculaeformis wood from plantation in shade slope and sun slope were determined and analyzed comparatively. The results showed that the growth of Acacia acuriculaeformis plantation in sun slo%通过对阴坡和阳坡大叶相思人工林生长特性和木材物理力学性质的测定和比较分析，结果表明：阳坡大叶相思人工林林分胸径、冠幅、树高和枝下高大于阴坡。阴坡大叶相思人工林木材密度、干缩系数和各项力学性质指标均小于阳坡大叶相思人工林；阴坡大叶相思人工林木材物理力学性质的分散程度略大于阳坡大叶相思人工林。差异显著性检验表明：阴坡和阳坡大叶相思人工林胸径、树高、冠幅和枝下高以及木材差异干缩、顺纹抗压强度、抗弯弹性模量、顺纹抗剪强度、径面硬度、端面硬度、抗劈力和冲击韧性差异均为极显著或显著，木材气干密度和基本密度、径向干缩系