北京林业大学学报2011，Vol.33Issue(5)：28-33,6.
长白山云冷杉针阔混交林两个演替阶段乔木的种间联结性
Interspecific association among arbor species in two succession stages of spruce-fir conifer and broadleaved mixed forest in Changbai Mountains,northeastern China
摘要
Abstract
Based on the use of variance ration（VR）,2×2 contingency table,χ2 test and interspecies association coefficient calculation,we examined interspecific association of dominant species both in polar-birch secondary forest and in spruce-fir forest.The results showed that mean variance of the 12 principal arbor species in poplar-birch secondary forests was 0.932,closes to 1,and had no significant correlation;but in spruce-fir mixed forest,it showed positive correlation,which indicated that the stage was relatively stable and adapted to the environmental conditions.The positive correlation of the whole community was strengthening along with the progression of succession.The end-result of competition would lead to the pioneer tree,Betula platyhylla and Populu.davidiana,which were declining species,be replaced by the zonal climax species spruce-fir forest in the future.The overall correlations among multi-species reflect the general trend among various species in community.The interspecific association further explains that the community we studied is in the transitional stage,ie from the polar-birch secondary forest to spruce-fir mixed forest.关键词
种间联结/联结系数/次生林演替/群落演替/杨桦林/云冷杉林Key words
interspecific association/association coefficient/secondary forest succession/community succession/poplar-birch forest/spruce-fir forest分类
农业科技引用本文复制引用
龚直文,亢新刚,顾丽,高延,冯启祥,姚景春..长白山云冷杉针阔混交林两个演替阶段乔木的种间联结性[J].北京林业大学学报,2011,33(5):28-33,6.基金项目
林业公益性行业科研专项 （）
“十一五”国家科技支撑计划项目 （）
