乐昌含笑群落的分布格局分析  

The Distribution Pattern Analyses of Michelia chapensis Communities

作　　者：彭重华[1] 巫涛[1] 王海峰[1] 刘晖[1] 张程[1] 

机构地区：[1]中南林业科技大学环境艺术设计学院,湖南长沙410004

出　　处：《河南农业科学》2011年第7期113-117,共5页Journal of Henan Agricultural Sciences

摘　　要：通过调查乐昌含笑群落,并根据种群聚集度指标,主要对群落内的乔木进行计算分析。结果表明,垂直分布上,乐昌含笑群落呈现稳定的金字塔型生长状态;水平分布上,群落内乐昌含笑的扩散系数(C)=0.38,丛生指数(I)=-0.62,扩散指数(Iδ)=0.18,聚块性指数(M*/-X)=0.99,Cassie R.M.指数(CA)小于0,经分析可知,乐昌含笑在群落中呈现均匀分布,依照相同的方法判断,群落内其他伴生树种类少,个体数量不多,呈现星散分布,整个群落趋于稳定,属于地带性顶级群落。The arbor of Michelia chapensis community was analyzed according to group aggregation degree index and field survey.The result showed that the community in vertical distribution displayed stable pyramid-type growth state;in horizontal distribution,the Disperse coefficient（C）,the clumping index（I）,dispersal index（Iδ）and the patch index（M＊/） of community were 0.38,-0.62,0.18 and 0.99,respectively,and the Cassie R.M.exponent（CA） was less than 0.The Michelia chapensis communities in community displayed an uniform distribution,but the other associated species in this community were fewer and their quantities of individuals were also fewer,and showed scattered distribution.It was stable community and belonged top communities in the areas.

关 键 词：乐昌含笑 群落 分布格局 

分 类 号：S718.542[农业科学—林学]