柏木(Cupressus funebris Endl.)木材生长与材质变异关系的研究

采用树干解析,生长锥取样测试、回归分析方法研究了柏木木材生长和材质变异的关系。结果表明柏木木材速生期持续50年以上,初始形成心材的年龄为13—16年,木材最大密度出现在20—25年间。人工林较同龄级天然林分蓄积高11.7％,速生期提早5—10年,最大密度提早5年。心材量与年龄间呈显著线性相关(r=0.9464),其色泽多型现象被认为是与木材内含物氧化过程有关,而后者受制于年龄和生命活力。

A STUDY ON THE RELATIONSHIP BETWEEN THE WOOD GROWTH AND THE VARIATI ON IN WOOD QUALITY OF CUPRESSUS FUNEBRIS ENDL

The relationship between wood growth and the variation in wood quality of Cupressus funebris Endl. was studied with the method of tree stem analysis, borer sample examination and regression analysis, The results indicate that the fast-growing period of the wood lasts for 50 years more with heartwood formation starting at 13—16 years old and the maximal density occurring at 20—25 years of age. Plantation presents a standing volum 11.7% more than that of comparable natural forest stand and a 5—year earlier occurrence for fast-growing and the maximal wood density. The heartwood amount is tightly correlated to tree age(r=0.9464), and its colour diversity is thought to depend on an oxidation process controlled by age and growth vigor.