1998－2001年对贡嘎山峨眉冷杉[Abies fabri(Mast.)Craib]原始林及其更新林凋落物的数量、凋落特征进行了观测和分析。结果显示，峨眉冷杉原始林的年均凋落量为2.777t/(hm^2·a)，其中枯叶、枯枝、杂物平均分别占70．62％、18．76％和10．57％；更新林的年均凋落量为2.652t/(hm^2·a)，其中枯叶、枯枝、杂物平均分别占85．10％、4．99％和6．09％。凋落节律均为“双峰”型。凋落物的凋落特征从一定角度反映了贡嘎山峨眉冷杉群落一般的生物学与生态学特征以及对高山环境条件的适应性。

A three-year study on the amount and characteristic of the litterfall of the primeval and regenerated Abies fabri (Mast.) Craib forests in Gongga Mountain was made. The results showed that the average annual amount of litterfall of the primeval Abies fabri forest and its regenerated forest was 2.777 t/(hm2cntdota) and 2.652 t/(hm2cntdota), respectively; 70.62% and 85.10% of it was distributed in withered leaves respectively, 18.76% and 4.99% of it in withered twigs respectively and 10.57% and 6.09% of it in the other miscellany respectively. There were two litterfall peaks annually in two kinds of forests. The characteristic of their litterfalls reflected the ecological and biological properties of the forests, and they also reflected adaptation of the forests to alpine environment.