木麻黄及2种相思海防林活立木应力波传播速度的影响因素分析  

Analysis on the Influence Factors of Stress Wave Propagation Velocity of Casuarina equisetifolia and Two Kinds of Acacia Standing Trees

作　　者：陈微 曾红梅 高颖慧 赵婷婷 周玉萍[3] 郝清玉[1,2] CHEN Wei;ZENG Hongmei;GAO Yinghui;ZHAO Tingting;ZHOU Yuping;HAO Qingyu(College of Life Sciences,Hainan Normal University, Haikou 571158,China;Ministry of Education Key Laboratory for Ecology of Tropical Islands, Haikou 571158,China;College of information science and technology,Hainan Normal University, Haikou 571158,China)

机构地区：[1]海南师范大学生命科学学院,海南海口571158 [2]热带岛屿生态学教育部重点实验室,海南海口571158 [3]海南师范大学信息科学技术学院,海南海口571158

出　　处：《海南师范大学学报（自然科学版）》2019年第3期281-287,共7页Journal of Hainan Normal University（Natural Science）

基　　金：国家自然科学基金项目(31760202)

摘　　要：采用应力波技术分析海南岛海防林主要树种、胸径、不同气候分布区、活立木不同方位等因素对活立木应力波传播速度的影响。结果表明:(1)木麻黄应力波传播速度与胸径大小呈极显著正相关,其中S 型曲线和倒函数曲线的相关性远好于直线的相关性,但二者之间的相关性主要适用于中小径级范围内,胸径大于16 cm 后应力传播波速度基本稳定;(2)不同树种应力波传播速度具有一定的差异性,相同胸径条件下(DBH:12~16 cm),木麻黄Casuarina equisetifolia 的应力波传播速度最大(4211.90 m·s^-1),马占相思Acacia mangium 次之(4025.17 m·s^-1),大叶相思Acacia auriculiformis 最小(3543.75 m·s^-1),且DBH ≥ 18 cm 时,各径级木麻黄应力波传播速度也均大于马占相思,表明木麻黄的抗风性能良好;(3)不同气候分布区及活立木不同方位对木麻黄应力波传播速度无显著影响。研究结果对评价海防林不同树种的抗风性能具有重要意义。In this paper, stress wave technology was used to analyze the influence of main tree species, tree diameter at breast high(DBH), different climate distribution area and different orientations on the stress wave velocity of standing trees in Hainan island coastal protection forest. The results showed that :(1) the stress wave propagation speed of Casuarina equi. setifolia was very significant positive correlation with the size of diameter at breast height(DBH), and the correlations of Stype curve and reciprocal function curve were far better than that of the linear line, but the correlation between them was mainly suitable for the small and medium trees. When the DBH classes were greater than 16 cm, the stress wave speed reached a steady state, and no longer correlation with DBH classes was found;(2) the stress wave velocities were different among different species. Under the condition of the same DBH(12~16 cm), the stress wave propagation speed of Casuarina equisetifolia reached to the maximum 4211.90 m·s^-1, followed by Acacia mangium, being 4025.17 m·s^-1, while Acacia auriculiformis was the minimum 3543.75 m·s^-1. When DBH was over 18 cm, the stress wave propagation velocity of Casuarina equisetifolia was also greater than that of Acacia mangium in all diameter classes, indicating that Casuarina equisetifolia had good wind resistance;(3)different climate distribution areas and different orientations of standing trees had no significant influence on the stress wave propagation speed of Casuarina equisetifolia. The results are of great significance to evalu? ate the wind resistance of different tree species in coastal protection forest.

关 键 词：应力波传播速度 木麻黄 马占相思 大叶相思 海防林 

分 类 号：Q948.1[生物学—植物学] S781.3[农业科学—木材科学与技术]