2024年3月29日 星期五
贡嘎山峨眉冷杉原始林及其更新群落凋落物的特征
The characteristic of litterfall in the primeval and regenerated Abies fabri forests in Gongga Mountain
2001年 第10卷 第3期 页码[35-38]    下载全文[0.7MB]  
摘要

19982001 年对贡嘎山峨眉冷杉Abies fabri (M ast .) 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 2.777 t/ ( hm2·a) , 其中枯叶枯枝杂物平均分别占70.62%、18.76 %10.57%;更新林的年均凋落量为 2.652 t/( hm2·a) , 其中枯叶枯枝杂物平均分别占 85.10%、4.99 %6.09%。 凋落节律均为双峰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

 

Abstract

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/( hm2·a) and 2 .652 t/( hm2 ·a ) , 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 .
 

关键词贡嘎山; 峨眉冷杉; 原始林; 更新林; 凋落物
Key wordsGongga Mountain; Abies fabri (Mast .) Craib; primeval forest; regenerated forest; litterfall
作者杨清伟
所在单位中国科学院·水利部成都山地灾害与环境研究所, 四川 成都 610041
点击量1090
下载次数720
基金项目国家与中国科学院青藏高原研究项目(KZ951-A1-204)