桤柏混交林种间竞争关系的研究  

Inter-specific Competitive Relationship between Tree Species in the Alder and Cypress Artificial Mixed Forest

作　　者：阳小成[1] 

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059

出　　处：《安徽农业科学》2010年第15期8244-8246,共3页Journal of Anhui Agricultural Sciences

基　　金：中国科学院山地生态恢复与生物资源利用重点实验室开放课题资助项目(kxysws0901)

摘　　要：运用邻体干扰指数模型研究了四川桤柏混交林的种间邻体干扰效应,并采用Lotka-Volterra竞争方程探讨了成熟林的种间竞争关系。结果表明,桤柏混交林存在着强烈的邻体干扰现象,种间在资源利用上产生广泛的生态位重叠,物种之间有着不对称的竞争关系,根据竞争模型预测,桤木最终将被排斥而退出群落。Neighborhood interference index model was used to study the influence of neighborhood interference on alder growth from cypress and alder itself.And Lotika-Volterra competition equation was applied to predict the result of competition between alder and cypress in the middle-aged alder and cypress mixed forest.The results indicated that the neighborhood interference is a common phenomenon in this type of mixed forest.The mixed tree species have extensive niche overlap in the utilization of resources in the mixed forest.Species possessed non-symmetrical competition and inter-specific competition was the more intense one.The predicted results showed that alder will be excluded from the mixed forest and it will be replaced by pure cypress forest.

关 键 词：桤木 柏木 混交林 邻体干扰 竞争 

分 类 号：S718.54[农业科学—林学]