【摘要】 采用树干解析的方法对桂东南地区火力楠人工林的生长规律进行了研究。结果表明,在树龄<8 a时,胸径生长的增长速度很快,在8 a<树龄<28 a期间,胸径的生长维持在较高的水平;而树高的快速生长期主要集中在前15 a,在此期间出现了2次明显的生长高峰期;材积的平均生长量在31 a内并未达到最大值,材积并未达到数量上的成熟。火力楠在前半期是以树高生长为主,在后半期则转入以胸径的生长为主。所拟合的生长预测模型具有很高的精确度,可适用于实际生产当中,其中,树高、胸径的最优生长模型是二次曲线模型,材积最优生长模型为坎派兹模型。更多还原

【Abstract】 The growth regularity of Michelia macclurei plantation in southeastern of Guangxi was studied with the method of stem analysis.The results showed that the growth rate of DBH increased rapidly by the year before the age of 8 years,and during the age of 8~ 28 years,the its growth kept at a high level.The rapid growth phase of tree height focused on the first 15 years,during this period,there were two pronounced peaks.The average growth of stem volume did not reach the maximum value in 31 years,indicating that the stem volume did not reach the quantity of mature.In the first half of the period,the species was mainly for the growth of tree height,and in the latter half of the period,it was mainly for growth of DBH.The quadratic curve model was superior to the growth process of DBH and tree height in the M.macclurei plantation,and the Compertz model was superior to the growth process of stem volume,and these growth model had a good correlation,which could be applied to production.更多还原