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    张闻博, 费本华, 田根林, 胡陶, 岳祥华, 常艳婷, 江泽慧. 不同纬度毛竹物理力学性质的比较研究[J]. 北京林业大学学报, 2019, 41(4): 136-145. DOI: 10.13332/j.1000-1522.20180245
    引用本文: 张闻博, 费本华, 田根林, 胡陶, 岳祥华, 常艳婷, 江泽慧. 不同纬度毛竹物理力学性质的比较研究[J]. 北京林业大学学报, 2019, 41(4): 136-145. DOI: 10.13332/j.1000-1522.20180245
    Zhang Wenbo, Fei Benhua, Tian Genlin, Hu Tao, Yue Xianghua, Chang Yanting, Jiang Zehui. Comparative study on physical mechanic properties of Phyllostachys edulis in different latitudes[J]. Journal of Beijing Forestry University, 2019, 41(4): 136-145. DOI: 10.13332/j.1000-1522.20180245
    Citation: Zhang Wenbo, Fei Benhua, Tian Genlin, Hu Tao, Yue Xianghua, Chang Yanting, Jiang Zehui. Comparative study on physical mechanic properties of Phyllostachys edulis in different latitudes[J]. Journal of Beijing Forestry University, 2019, 41(4): 136-145. DOI: 10.13332/j.1000-1522.20180245

    不同纬度毛竹物理力学性质的比较研究

    Comparative study on physical mechanic properties of Phyllostachys edulis in different latitudes

    • 摘要:
      目的本研究旨在探讨分布在不同亚热带种源地区毛竹物理力学性质的变异规律。
      方法研究采用基于R语言的单因素方差分析、主成分分析等方法,对3个地区210株毛竹的物理性质和力学性质等8个相关指标(体积全干干缩率、体积气干干缩率、含水率、全干密度、气干密度、微纤丝角、抗弯强度和弹性模量)进行遗传变异分析。
      结果通过比较分析发现毛竹的物理力学性质在3个不同纬度地区间存在显著差异,这种差异可能是受遗传因素、环境因素等共同控制。体积干缩率、密度、微纤丝角和抗弯相关指标均以低纬度广西灌阳地区最大;只有含水率的分布规律为浙江安吉 > 安徽霍山 > 广西灌阳。从变异系数来看,3个地区间的物理力学性质在群体间和群体内的变异程度没有呈现明显的趋势和规律。主成分分析得出抗弯相关指标、体积干缩率和含水率均不同程度地代表了所调查性状中主要的物理力学性质。
      结论3个地区中,广西灌阳地区的竹材具有高强度和高密度等特点,更适合作为工程用材进行加工利用。研究成果不仅可深入了解不同纬度地区毛竹物理力学性质的特征,还可以发展适地适材伐竹,为合理利用我国全分布区的毛竹资源提供理论依据。

       

      Abstract:
      ObjectiveThe purpose of this study was to investigate the variation of physical mechanic properties of Phyllostachys edulis distributed in different subtropical provenance regions.
      MethodThree natural populations of Moso bamboo were obtained distributing in Anhui, Guangxi, and Zhejiang provinces, 8 physical mechanic properties were analyzed using one-way ANOVA and principal component analysis based on R language.
      ResultThe physical mechanic properties of Moso bamboo were significantly different from 3 populations, the peaks of shrink, moisture content, micro fibril angle and bending strength were all from Guangxi Zhuang Autnomus Region. The variable coefficient of these traits did not show obvious trend and regulation. PCA analysis showed that bending strength, modulus of elasticity, oven-dried volume shrinking ratio, air-dried volume shrinking ratio, and moisture content were the most dominant properties in the 8 physical mechanic properties.
      ConclusionOverall consideration, the Moso bamboo from Guangxi Zhuang Autnomus Region was characterized by high strength and high density during these 3 provinces, it is more suitable for processing and utilization as engineering materials. The research results will provide the theoretical basis for excavating excellent species of Moso bamboo in different geographical environments and rationally utilizing the bamboo resources in China’s entire distribution latitude.

       

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