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利用树干解析计算分析福建省牛姆林自然保护区18 a生拉氏栲(Castanopsis lamonteii)人工林的生长量、生物量及生产力特征.结果表明:拉氏栲树高、胸径和材积总生长量分别达到16.4m,15.85 cm和0.17 m3,期间分别出现5次、3次和1次生长高峰,按生长高峰出现年份先后顺序依次为胸径、树高和材积;树高、胸径连年生长量曲线起伏波动较大,且与平均生长量曲线出现多次相交,材积各生长量曲线变化幅度相对较小;将拉氏栲树高、胸径和材积总生长量与林龄进行回归方程拟合,拟合效果理想;拉氏栲各器官生物量表现为干>枝>根>叶,各器官含水率表现为叶>根>枝>干,单株平均含水率为41.9%;拉氏栲种群生物量为189 133 kg·hm-2,种群净生产力为10507.39 kg·hm-2·a-1.
The growth, biomass and productivity of Castanopsis lamonteii plantation were analyzed by tree trunk analysis and analysis on the 18-year-old Castanopsis lamonteii plantation in Fujian Niumulin Nature Reserve.The results showed that the height, DBH, Reaching 16.4m, 15.85cm and 0.17m3 respectively. During the period, there appeared 5, 3 and 1 growth peak respectively. According to the order of the growth peak, they were the diameter at breast height, the height of tree and the volume of timber. The annual growth curve of tree height and DBH fluctuated The variation of volume growth curve was relatively small. The height growth, diameter at breast height and volume growth were fitted with age-old regression equation to fit The results showed that the average biomass of each organ was dry> branch> root> leaf. The leaf water content of each organ was leaf> root> branch> stem, the average water content per plant was 41.9% 189 133 kg · hm-2 and net population productivity of 10507.39 kg · hm-2 · a-1.