湿地松人工林木材物理力学性质变异的研究

不同林龄、立地条件、林分密度的湿地松人工林木材物理力学性质的测定与分析结果表明：影响湿地松人工林木材物理力学性质的主导因子是林龄、其次是立地条件、林分密度影响最小；1级立地级上、林分密度为1740株儿m’的11年生湿地松人工林的木材达到建筑材受力构件的最低等级要求．研究结果为湿地松人工林的定向培育和合理利用提供科学的理论依据．

Study on Variation in Physical Properties and Mechanical Properties of Slash Pine Wood from Plantation

Physical properties and mechanical properties of slash pine (Pinus elliottii)wood from plantations, with different ages and densities and grown in different sites, were determined and analysed. The results showed that the degree to which each factor affects the physical properties and mechanical properties of slash pine wood were determinated as follows the first is age, the second is site, and the third is density. The wood with 11 years and grown in Ⅲ site could meet the least demand of architectural pressure. The conclusions provided a acientific basis for directive culture and rational utilization of slash pine