---

作 者 ：刘鹏

期 刊 ：林业科学 1996年 32卷 1期 页码：69-77

关键词：酸雨；大气污染；马尾松；木材构造；

Keywords:Acid rain, Air pollution, Pinus massoniana, Wood structure,

摘 要 ：对广西壮族自治区生长在严重酸雨危害(S_II)、轻度酸雨危害(S_I)和未受酸雨危害(S₀)三个地方的马尾松(Pinus massoniana Lamb.)木材构造进行了研究,结果如下:边材宽度、管胞长度、径向直径、径壁厚度及弦壁厚度,5_III0;年轮宽度、管胞径向腔径、弦向直径、弦向腔径及管胞比量,S_II0I:晚材率、管胞胞壁率及树脂道比量,S_II>S_I>S₀;木射线比量,S_II>S₀>S_I;纤丝角,S_II=S₀I。经方差分析,边材宽度、年轮宽度及管胞径向直径三者差异显著;而其它各项差异均不显著。

Abstract:Five trees from each of three level of diseased Masson Pine (Picks massoniana Lamb. )stand affected by air pollution and acid rain were collected from LiuZhou of Guangxi Autonomy, China. The results of wood structural characteristics of the seriously diseased (S_II) trees as compared to the slightly diseased (S_I) and no diseased (S₀) trees obtained from the study were as follows:1.The width of sapwood:S_II (7.62cm)I(8.57cm) 0(9.30cm);2.The width of annual ring:S_II(3.48cm)0(4.82mm) I(5.00mm);3.The percentage of latewood:S_II (37.6% )>S_I (36.7% )>S₀(36.2%);4.The percentage of traicheid wall: S_II(48.13% )>S_I(47.51%)>S₀(46.08%);5.The ratio of tissueThe tracheid:S_II(91.9%)I(92.69%)0(92.80%);The ray:S_II(7.34%)>S₀(6.78%)>S_I(6.55%);The resin canal: S_II (0.68%) >S_I (0.57%) >S₀ (0.52%);6.The Morphology of tracheidThe length of tracheid: S_II(3828μm)I(3966μm)0(4372μm);The tangential diameter of tracheid: S_II(36.11μm)0(37.28μm)I(37.72μm); The tangential diameter of tracheid Iumen: S_II(24.91μm) 0(24.95μm)I(26.12μm);The tangential wall thickness: S_II(5.06μm)I(5.25μm)0(5.7μm);The radial diameter of tracheid: S_II(35.08μm)I(37.51μm) 0(38.10μm);The radial diameter of tracheid lumen: S_II(24.97μm)0 (26.69μm)I(27.07μm);The radial wall thickness of tracheid: S_II(5.6μm) I(5.8μm)0(6.17μm);7. The fibrillar angle:S_II:S₀ (7.0°)I(7.3°);Diferent analysis indicated that the differences among the width of sapwood,the width of annual ring and the radial diameter of tracheid of seriously diseased trees and that of slightly diseased trees and no diseased trees were significant,but the others were insignificant.

---