摘要
以九寨沟次生林样地资料为基础，研究了九寨沟自然保护区次生林的物种多样性特征．结果表明：九寨沟次生植被恢复过程中，物种多样性先逐渐升高，然后又逐渐下降．从群落不同层次来看，落叶阔叶林、针阔叶混交林、次生针叶林的物种丰富度均表现为：草本层＞灌木层（包括幼树与幼苗）＞乔木层．各类群落乔木层的物种丰富度、Ｓｉｍｐｓｏｎ指数。
Community species diversity of secondary forests in Jiuzhaigou Valley Nature Reserve are studied through field investigation. The results show that the community species diversity increase and then decrease in vegetation process. The richness of different community layers shows that herb layer>shrub layer (including seedling and sapling)>tree layer. The community species diversities of different secondary forests′ tree layer show that needle leaf and broad leaf mixed forests>summergreen broad leaf forests>secondary coniferous forests.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
1999年第1期83-87,共5页
Journal of Sichuan Normal University（Natural Science）
关键词
物种多样性
次生林
九寨沟
自然保护区
森林群落
Community species diversity
Secondary forests
Jiuzhaigou Valley Nature Reserve
