贵州林业科技
貴州林業科技
귀주임업과기
GUIZHOU FORESTRY SCIENCE AND TECHNOLOGY
2011年
2期
10-13
,共4页
大叶相思%人工林%坡向%生长%材质
大葉相思%人工林%坡嚮%生長%材質
대협상사%인공림%파향%생장%재질
Acacia acuriculaeformis%plantation%slope direction%growth%wood quality
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、径向干缩系数、弦向干缩系数、体积干缩系数、抗弯强度和弦面硬度差异不显著。研究结果为大叶相思人工林培育和木材合理利用提供科学依据。
通過對陰坡和暘坡大葉相思人工林生長特性和木材物理力學性質的測定和比較分析，結果錶明：暘坡大葉相思人工林林分胸徑、冠幅、樹高和枝下高大于陰坡。陰坡大葉相思人工林木材密度、榦縮繫數和各項力學性質指標均小于暘坡大葉相思人工林；陰坡大葉相思人工林木材物理力學性質的分散程度略大于暘坡大葉相思人工林。差異顯著性檢驗錶明：陰坡和暘坡大葉相思人工林胸徑、樹高、冠幅和枝下高以及木材差異榦縮、順紋抗壓彊度、抗彎彈性模量、順紋抗剪彊度、徑麵硬度、耑麵硬度、抗劈力和遲擊韌性差異均為極顯著或顯著，木材氣榦密度和基本密度、徑嚮榦縮繫數、絃嚮榦縮繫數、體積榦縮繫數、抗彎彊度和絃麵硬度差異不顯著。研究結果為大葉相思人工林培育和木材閤理利用提供科學依據。
통과대음파화양파대협상사인공림생장특성화목재물리역학성질적측정화비교분석，결과표명：양파대협상사인공림림분흉경、관폭、수고화지하고대우음파。음파대협상사인공림목재밀도、간축계수화각항역학성질지표균소우양파대협상사인공림；음파대협상사인공림목재물리역학성질적분산정도략대우양파대협상사인공림。차이현저성검험표명：음파화양파대협상사인공림흉경、수고、관폭화지하고이급목재차이간축、순문항압강도、항만탄성모량、순문항전강도、경면경도、단면경도、항벽력화충격인성차이균위겁현저혹현저，목재기간밀도화기본밀도、경향간축계수、현향간축계수、체적간축계수、항만강도화현면경도차이불현저。연구결과위대협상사인공림배육화목재합리이용제공과학의거。
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 slope was superior to that in shade slope while all physical and mechanical indexes of Acacia acuriculaeformis wood from plantation in shade slope were smaller than that in sun slope. Dispersions of all physi- cal and mechanical indexes of Acacia acuriculaeformis wood from plantation in shade slope were slightly bigger than that in sun slope. Different significant t test showed that there were extremely significant differences or significant ones on DBH（diameter at breast height）, height, length of branch , height under first living branch as well as ratio of tangential shrinkage to radial shrinkage, compression strength parallel to grain , elastic modulus of bending, shear strength parallel to grain, hardness of cross side, hardness radial side and cleavage strength and impact strength of their wood but no ones on density, shrinkage coefficient of radial direction , tangential shrinkage coefficient , volume shrinkage coefficient, bending strength and hardness of tangential side between Acacia acuriculaeformis wood from plantation in shade slope and that in sun slope . The conclusions provided scientific basis for plantation cultivation and rational utilization of Acacia acuriculaeformis .
