三尖杉所属群落优势乔木树种种间关系  

Interspecies Connection of Dominant Tree Species in Cephalotaxus fortunei Communities

作　　者：郭泉水[1] 包奋强[2] 王祥福[1] 池秀莲[2] 马超[1] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京100091 [2]北京林业大学林学院,北京100083

出　　处：《林业科学研究》2008年第5期662-668,共7页Forest Research

基　　金：国家林业局野生动植物保护司专项(200501);江西大岗山森林生态系统定位观测野外台站资助项目

摘　　要：采用样方调查法,对组成大岗山三尖杉所属群落的乔木树种进行调查。通过计算重要值确定三尖杉所属群落优势乔木树种,在此基础上,研究优势树种的总体联结性、两树种间的联结性和种间协变。结果表明:三尖杉所属群落内的15个优势乔木树种总体间存在显著正关联;两树种间具有显著正联结的种对是细枝柃-梾木、红楠-杉木,呈显著负联结的种对是石栎-杉木;三尖杉与其他优势乔木树种的联结性均未达到显著程度,细枝柃-鹿角杜鹃、细枝柃-梾木、细枝柃-三尖杉、梾木-紫楠、红楠-杉木、红楠-拟赤杨等6个种对表现出明显的正协变,鹿角杜鹃-柃木种对表现出明显的负协变;种对正协变的存在是由于这些物种对环境资源的利用具有相似性所致。Based on the sample plot investigation method, the tree species of Cephalotaxus fortunei community were investigated in Dagangshan Mountain, The main tree species of Cephalotaxus fortunei community were ascertained by computing the Importance Value of tree species. The overall association of the dominant tree species , the interspecific association of dominant tree species and interspecific covariation of the dominant tree species were studied. The result showed that the overall association of the dominant tree species was positive. The pairs of positive interspecific association were as following： Eurya loquaiana-Cornus macrophylla, Machilus thunbergii- Cunninghamia lanceolata ; The interspecific association of Lithocarpus glabra-Cunninghamia lanceolata was negative. The interspecific associations of Cephalotaxus fortunei with other species were not significant. There were 7 pairs of species showing a significant interspecific covariation, 6 pairs were positive interspecific covariation, They were： Eurya loquaiana-Rhododendron latoucheae, Eurya loquaiana-Cornus macrophylla, Eurya loquaiana-Cephalotaxus fortunei, Comus macrophylla-Phoebe sheareri, Machilus thunbergii-Cunninghamia lanceolata, and Machilus thunbergii-Alniphyllum fortunei. Only the interspecific covariation of Rhododendron latoucheae with Eurya japonica was negative. The reason for positive interspecific covariation was that these species used the resource similarly.

关 键 词：三尖杉 种间联结 种间协变 

分 类 号：S718.54[农业科学—林学]