摘 要 ：按径级标准木法测定了尾叶桉(Eucalyptus urophylla)器官生物量,建立了林木器官干重(w)与胸径和树高(D2H)关系的相对生长方程,进而计算出尾叶桉林分的生物量和生产力.结果表明:东门林场10年生尾叶桉人工林平均生物量为144.85 t hm-2,各器官生物量的大小序列为:干材(71.69%)＞根(14.21%)＞皮(7.99%)＞枝(4.71%)＞叶(1.40%)；尾叶桉林分的平均生产力为15.98 t hm-2a-1；由于生物量的径级效应,使林分生物量的径级分布与株数的径级分布出现显著的差异。
Abstract:An investigation of stand biomass and productivity was undertaken of Eucalyptus urophylla planted at spacing of 2 mx3 m in 1990 on Dongmen State Forest Farm, Guangxi Province, China. Stands in 27 plots with 20 m x 24 m each were measured, and 9 individual sampling stands from each diameter class were chosen. Regression equations for predicting biomass production were developed using functional dependence of biomass in different plant components on D2H. Mean biomass production of 10-year-old single tree and