研究了贡嘎山高山生态系统定位研究站8年(2001—2008年)来对峨眉冷杉成熟林凋落物量监测所积累的资料,分析了该群落凋落物量动态变化及组成特征。结果表明,贡嘎山峨眉冷杉成熟林在8年间的年凋落物量波动范围为125.84～377.17g/m2,平均凋落量为285.77g/m2,年际波动较大,凋落量总体呈逐年上升趋势;叶凋落量占凋落总量的77.99%,枯枝和花果杂物凋落量占凋落总量的分别19.55%和2.46%,叶凋落量高于枯枝和花果杂物凋落量所占比例;与多数森林凋落物一样,峨眉冷杉成熟林凋落物各组分比例由高到低依次为叶、枯枝、花果杂物。

The observations and measurements of the litter production at the Gongga alpine ecosystem research station for 8 years (2001—2008) were studied,and the litter production dynamics and composition characteristics were analyzed. The results showed that the variation in the annual litter production was significant while the annual litter production ranged from 125.84 g/m2 to 377.17 g/m2 with an average of 285.77 g/m2. Overall,the litter production increased year by year over the 8 years. The mean annual leaf litter production was higher than that of the branches and flowers and other mixed-materials,which accounted for 77.99% of the total litter production. The litter components exhibited a consistent sequence with the most forest types in the following order:leaves; branches; flower,fruits and other mixed-materials.