Interspec ies Connection of Dom inant Tree Spec ies inCepha lotaxus fortune i Commun ities

GUO Quan-shui; BAO Fen-qiang; WANG Xiang-fu; CHI Xiu-lian; MA Chao

Based on the samp le p lot investigation method, the tree species of Cephalotaxus fortunei community wereinvestigated in DagangshanMountain, The main tree species of Cephalotaxus fortunei communitywere ascertained bycomputing the Importance Value of tree species. The overall association of the dominant tree species , theinterspecific association of dominant tree species and interspecific covariation of the dominant tree species werestudied. The result showed that the overall association of the dominant tree species was positive. The pairs ofpositive interspecific association were as following: Eu rya loquaiana2Cornus m acrophylla, M ach ilus thunbergiiCunningham ia lanceolata; The interspecific association ofL ithoca rpus glabra-Cunn ingham ia lanceola ta was negative.The interspecific associations of Cephalotaxus fortunei with other specieswere not significant. There were 7 pairs ofspecies showing a significant interspecific covariation, 6 pairs were positive interspecific covariation, They were:Eurya loquaiana-Rhododendron latoucheae, Eu rya loquaiana-Cornus m acrophylla, Eurya loquaiana-Cepha lotaxusfortunei, Cornus m acrophylla-Phoebe sheareri, Mach ilus thunbergii-Cunningham ia lanceolata, and M achilusthunbergii-A lniphyllum fortunei. Only the interspecific covariation of Rhododendron la toucheae with Eu rya japon icawas negative. The reason for positive interspecific covariation was that these species used the resource similarly.

1. Research Institute of Forest Ecology, Environment and Protection, CAF

2. Key Laboratory of Forest Ecology and Environment,State Forestry Administration,Beijing　100091, China

Received Date: 2007-11-01

Abstract: Based on the samp le p lot investigation method, the tree species of Cephalotaxus fortunei community wereinvestigated in DagangshanMountain, The main tree species of Cephalotaxus fortunei communitywere ascertained bycomputing the Importance Value of tree species. The overall association of the dominant tree species , theinterspecific association of dominant tree species and interspecific covariation of the dominant tree species werestudied. The result showed that the overall association of the dominant tree species was positive. The pairs ofpositive interspecific association were as following: Eu rya loquaiana2Cornus m acrophylla, M ach ilus thunbergiiCunningham ia lanceolata; The interspecific association ofL ithoca rpus glabra-Cunn ingham ia lanceola ta was negative.The interspecific associations of Cephalotaxus fortunei with other specieswere not significant. There were 7 pairs ofspecies showing a significant interspecific covariation, 6 pairs were positive interspecific covariation, They were:Eurya loquaiana-Rhododendron latoucheae, Eu rya loquaiana-Cornus m acrophylla, Eurya loquaiana-Cepha lotaxusfortunei, Cornus m acrophylla-Phoebe sheareri, Mach ilus thunbergii-Cunningham ia lanceolata, and M achilusthunbergii-A lniphyllum fortunei. Only the interspecific covariation of Rhododendron la toucheae with Eu rya japon icawas negative. The reason for positive interspecific covariation was that these species used the resource similarly.

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Reference (19)

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Interspec ies Connection of Dom inant Tree Spec ies inCepha lotaxus fortune i Commun ities

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