红花香椿群落种间联结性研究

Research on Interspecific Associations in Toona Rubriflora Community

对典型样地调查资料建立2×2联列表等方法,计算和分析了红花香椿群落的种间联结、共同出现几率、X 2检验值和主要树种重要值等技术参数,揭示了红花香椿种群间的种间联结关系。重要值测定结果表明,群落主要优势树种为红花香椿2 0.2 5%、香叶树1 7.1 5%、桂花1 4.1 7%、薄姜木7.5 8%、酸枣5.0 9%、糙叶树5.0 1%、香樟4.8 4%、臀形果4.8 4%、枫香3.1 9%。与红花香椿种间正向联结程度较高的树种为酸枣、千年桐、毛八角枫、罗木石楠、龙眼、苦楝、黑壳楠、鹅掌楸、楤木、八角枫,负向种间联结的主要树种为薄姜木、糙叶树、枫香、木蜡、臀形果、香樟。红花香椿与酸枣既有相同或相似立地环境需求,也能互利共生,酸枣是红花香椿的理想伴生树种。

Based on typical sample plot data and establishing 2x2 linked list, this paper counts and analyzes the technical parameters,such as the interspecific associations, common occurrence probability, X2 test value and some important values of main tree species,whichshows the relationship of interspecific associations in toona rubriflora community. The text results of these important values shows thedominant tree species in the community are 20.25% of Toona rubriflora,17.15% of lindera communis,14.17% of Osmanthus fragrans,7.58%cof Vitex quinata,5.09% of Persimmon,5.01% of Aphananthe aspera,4.84% of Camphor tree,4.84% of Rosaceae Pygeum topengii and 3.19%of Sweetgum. The trees with the positive association degree with Toona Rubriflora are Persimmon,aleurites Montana,Alangium kurzii,avidsonPhotinia,longan,chinaberry,Lindera megaphylla,Liriodendron chinense,Chinese aralis and Chinese alanguim,while the ones with negativeassociation degree are Vitex Quinata, Aphananthe aspera, sweetgum,Amboyna, Rosaceae Pygeum topengii and cinnamomum camphora.Toona rubriflora and persimmon,growing mutually, have the same and similar demands of situated environment, so persimmon is theideal associated species of Toona rubriflora.