气候和土壤类型对湿地松人工林生长和材质的影响

湿地松人工林林分生长和材质在不同气候和土壤类型条件下差异的比较分析表明:生长在南亚热带山地黄红壤上的湿地松人工林林分的胸径和树高以及木材密度和力学强度大于生长在中亚热带山地黄红壤上的,而木材尺寸稳定性表现则相反;生长在南亚热带滨海沙地林分的胸径和树高以及木材密度和力学强度均小于生长在南亚热带山地黄红壤上的,木材尺寸稳定性则表现相反。差异显著性t检验的结果表明:气候和土壤类型极显著或显著影响湿地松人工林林分胸径和树高以及木材密度、干缩性和力学强度。

Effects of climate and soil type on growth and wood quality of slash pine plantations

Difference of growth and wood properties of slash pine(Pinus elliottii Engelm) plantation in different kinds of soil with different climates were analyzed comparatively.The results showed that in the same soil type of yellow-red soil not only diameter at breast height(DBH) and height of slash pine plantation stand but also density,mechanical strength of slash pine wood from plantation growing in southern subtropics were longer and higher than those in middle subtropics,while size stability of slash pine wood from plantation growing in southern subtropics was lower than that in middle subtropics.Under the same climate region of southern subtropics not only DBH and height of slash pine plantation stand but also density,mechanical strength of slash pine wood from plantation growing in coastal sand were shorter and lower than those in yellow-red soil,while size stability density of slash pine wood from plantation growing in coastal sand were higher than that in yellow-red soil.Statistical test showed that climate and soil type influenced extremely significantly or significantly on DBH,height,density,shrinkage,mechanical strength of slash pine wood from plantation.