摘要
以皆伐后长白山红松阔叶林4个不同演替阶段的林分为对象,分析其群落和优势树种的变化特征.结果表明:在长白山红松阔叶林不同演替阶段中,乔木树种的丰富度、Shannon多样性和Simpson优势度变化较小,多度和均匀度变化较大.随着演替的进程,群落的优势树种组成发生变化,种数逐渐减少,优势种的胸高断面积加和和最大重要值逐渐增加,说明不同演替阶段群落的优势种地位不断提高.长白山红松阔叶林的演替过程是白桦、山杨、黄檗、春榆等阳性或半阴性树种不断减少,而紫椴、水曲柳、红松、色木槭等阴性树种不断增加的过程.
Taking the broad-leaved Korean pine forest stands at four different succession stages after clear-cutting in Changbai Mountains as test objects,this paper studied the change characteristics of community composition and dominant species.The tree species richness,Shannon diversity index,and Simpson dominance index at different succession stages had less change,but the evenness and abundance changed greatly.As succession progressed,the community composition changed constantly,i.e.,species number decreased,while the basal area sum and the maximum importance value of dominant tree species increased,suggesting that the dominance of dominant species was continuously improved with succession.In the succession process of broad-leaved Korean pine forest in Changbai Mountains,Betula platyphylla,Populus davidiana,Phellodendron amurense,Ulmus japonica,and other intolerant or semi-intolerant tree species decreased,while Tilia amurensis,Fraxinus mandshurica,Pinus koraiensis,Acer mono,and other shade-tolerant species increased.
出处
《应用生态学报》
CAS
CSCD
北大核心
2011年第4期866-872,共7页
Chinese Journal of Applied Ecology
基金
国家"十一五"科技支撑计划项目(2006BAD03A09)资助
关键词
长白山
红松阔叶林
优势种
皆伐干扰
耐阴性
重要值
Changbai Mountains
broad-leaved Korean forest
dominant species
clear-cutting disturbance
shade tolerance
importance value
