测定了 9年生鹅掌楸人工林生物量并建立其估算模型 ,分析了生物量分配规律及林分生产力水平。结果表明 :9年生鹅掌楸人工林总生物量为 6 4 .538t/hm2 ,乔木层、林下植物层和凋落物所占比例分别为 :93.4 0 %、3.6 3%、2 .97%。乔木层各器官依生物量大小排序为 :干、根、枝、皮、叶 ,所占比例依次为 :6 2 .79%、16 .6 1%、11.11%、7.12 %、2 .4 7%。林分净生产力为 7.171t/hm2 ·a。 The biomass of nine-year-old stands of Liriodendron hybrida was determined and its estimation model was established. The distribution rules of biomass and stand productivity were analyzed. The results showed that the total biomass of 9-year-old Liriodendron chinense plantations was 64.538t / hm2, and the proportions of arbor layer, understory plant layer and litter were 93.4%, 3.6% and 2.97%, respectively. The rank order of the organs in the arbor layer is: stem, root, branch, skin and leaf, the proportions are as follows: 62.79%, 16.61%, 11.11%, 7.12%, 2.474% . The net productivity of the stand is 7.171t / hm2 · a.