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从桉树三林一号无性系的试验林中选取标准木，利用分层切割法测定地上部分生物量和树冠的特征因子，对该无性系的树冠特征与树高和胸径生长的关系、地上部分的生物量的分布作初步探讨。６年生的桉树三林一号无性系分中单株立木的胸径生长与叶面积大小有显著的相关关系，立木地上部分总生物量为２９４０ｔ／ｈｍ２，干材占地上部分生物量的８３８％，枝叶的生物量合计占１６２％，其中叶量为４１％。
The standard wood was selected from the experimental forest of Eucalyptus Sanlin clones. The stratified cutting method was used to determine the characteristics of aboveground biomass and canopy. The relationship between the crown characteristics and tree height and DBH growth of the clones was analyzed. The distribution of biomass as a preliminary study. The 6-year-old Eucalyptus Sanlin clones had a significant correlation between the DBH growth and the leaf area size. The total biomass of aerial parts of stands was 2940t / hm2. The dry biomass accounted for 83% of the aboveground biomass 8%, the total biomass of branches and leaves accounted for 16 2%, of which 4 1% of the leaves.