贡嘎山东坡峨眉冷杉林地被物分布及其水文效应初步研究  

Distribution patterns and hydrological effects of moss and litters in Abies fabri forests on eastern slope of Gongga mountain.

作　　者：余新晓[1] 赵玉涛 程根伟[2] 

机构地区：[1]北京林业大学水土保持学院,水土保持与荒漠化防治教育部重点实验室 [2]中国科学院成都山地灾害与环境研究所

出　　处：《北京林业大学学报》2002年第5期14-18,共5页Journal of Beijing Forestry University

基　　金：国家自然科学基金重点项目 ( 39930 130 );教育部博士点基金资助项目 ( 2 0 0 0 0 0 2 2 0 9)

摘　　要：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 .2 3mm .随峨眉冷杉林演替的发展 。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 kg/hm 2 litter falls can be produced per month in wet seasons. With the succession of Abies fabri forest, volume of moss and litters in forest floor increase. Components and their quantities of litter fall 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 fabri forest. The maximum water holding capacity of litters and moss in the Abies fabri forest can reach 3 93 mm, and the effective maximum water holding capacity can reach 3 23 mm. The water regulating function of litters and moss will increase with the Abies fabri forest succession.

关 键 词：贡嘎山东坡 峨眉冷杉林 地被物分布 水文效应 

分 类 号：S715[农业科学—林学]