| 酸雨对杨树木材性质的影响 |
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| 引用本文： | 马连祥,周定国.酸雨对杨树木材性质的影响[J].木材工业,2000,14(2):18-20. |
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| 作者姓名： | 马连祥 周定国 |
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| 作者单位： | 南京林业大学木材工业学院!南京210037 |
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| 摘 要： | 受酸雨危害和未受酸雨危害的杨树木材性质的对比表明：酸雨对杨树生长和木材性质产生显著的影响。与未受危害的健康材相比，危害材的木素和戊聚糖含量相对升高３．７２％和１．４３％，而综纤维素的含量相对减少３．４５％，热水抽出热，苯－醇抽出物和１％ＮａＯＨ抽出物含量明显高于健康材。
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| 关 键 词： | 酸雨 杨树 木材性质 加工利用 变异 影响 |
The Influence of Populus Wood Properties by Acid Rain |
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| MA Lian xiang,ZHOU Ding guo,XU Kui wu.The Influence of Populus Wood Properties by Acid Rain[J].China Wood Industry,2000,14(2):18-20. |
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| Authors: | MA Lian xiang ZHOU Ding guo XU Kui wu |
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| Abstract: | Wood properties of trees ( Populus) selected from healthy and acid rain damaged forest were analyzed to evaluate the possible impacts on wood properties and utilization. Comparing with healthy trees, the contents of lignin and pentosan in diseased trees increased 3.72% and 1.43%, but the contents of cellulose in diseased trees decreased 3.45%. Extractive content showed significant difference between diseased trees and healthy trees. The basic density and air drying density and oven dry density of wood of diseased trees decreased 2.62% and 1.75% and 1.19%. Moisture content in diseased trees was lower than in healthy tree, the difference of moisture content in sapwood was larger and in heart wood was smaller. The tangential shrinkage of wood of diseased trees increased relative 10.77%, the radial shrinkage of wood of diseased trees decreased relative 16.88%. The variation of wood properties by acid rain influenced significantly wood processing and utilization . |
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| Keywords: | Acid rain Populus Wood properties Utilization |
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