贡嘎山东坡峨眉冷杉林在湿季内每月每公顷约产生69～89kg凋落物 .峨眉冷杉林的顺向演替能增加苔藓与枯落物的贮量并促进它的发育 ,峨眉冷杉林不同演替阶段的林分中凋落物的成分所占总量的比例有差异 ,苔藓层及枯落物L亚层、F亚层和H亚层含量与比例也不同 .贡嘎山东坡峨眉冷杉林内地表地被物的一次性最大持水量可达3.93mm ,即使有效持水量也可以达到3.23mm .随峨眉冷杉林演替的发展 ,林内地被物调节水量的作用逐渐增加

Distribution patterns and hydrological effects of litters and moss in Abies fabri forest ecosystem on eastern slope of Gongga mountain are researched in this paper. The results are as follows. About 69～89 kgPhm2 litter-falls can be produced per month in wet seasons. With the succession of Abies f abri forest , volume of moss and litters in forest floor increase. Components and their quantities of litter2fall are different and also the quantities of moss and composed litters, semi-composed litters and non-composed litters are different in various succession periods of Abies f abri forest. The maximum water holding capacity of litters and moss in the Abies fabri forest can reach 3193mm , and the effective maximum water holding capacity can reach 3123mm. The water-regulating function of litters and moss will increase with the Abies f abri forest succession.