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当前位置: 首页 > 文章 > 云南榧树群落种内与种间竞争研究 西北林学院学报 2022,37 (1) 47-52
Position: Home > Articles > Intra-and Inter-specific Competition of Torreya yunnanensis Community Journal of Northwest Forestry University 2022,37 (1) 47-52

云南榧树群落种内与种间竞争研究

作  者：
于达勇;樊智丰;马长乐;李瞒瞒
单  位：
西南林业大学园林园艺学院;国家林业和草原局西南风景园林工程技术研究中心
关键词：
云南榧树;种间竞争;种内竞争;竞争强度
摘  要：
为探讨云南榧树竞争关系和动态规律,在其群落样地踏勘的基础上,采用Hegyi单木竞争模型对云南榧树种群的种内和种间竞争进行定量分析。结果表明,不同树种对云南榧树的种间竞争存在着差异,云南榧树受到种间竞争强度由大到小顺序为:川滇高山栎、胡桃、飞蛾槭、栗等。云南榧树的种内竞争强度与种间竞争强度的总和大致相同,种内和种间竞争强度均随着径级的增加而逐渐减小。对象木胸径与竞争强度之间服从幂函数关系C_I=AD~(-B),胸径大于10 cm受到的竞争压力处于较低水平,且变化幅度不明显,利用该模型能很好地预测云南榧树种内和种间竞争强度。
译  名：
Intra-and Inter-specific Competition of Torreya yunnanensis Community
作  者：
YU Da-yong;FAN Zhi-feng;MA Chang-le;LI Man-man;School of Landscape Architecture and Horticulture,Southwest Forestry University;Southwest Landscape Architecture Engineering Technology Research Center of National Forestry and Grassland Administration;
关键词：
Torreya yunnanensis;;interspecific competition;;intraspecific competition;;competition intensity
摘  要：
Torreya yunnanensis is a second-class protected wild plant in China.In order to explore the competition relationship and dynamic rules of T.yunnanensis,based on the survey of the community plots, the intra-and inter-specific competitions of T.yunnanensis were quantitatively analyzed by using Hegyi single-tree competition model.The results showed that the inter-specific competition of different tree species to T.yunnanensis was different, the order of the intensity of inter-specific competition for T.yunnanensis wass Quercus guyavaefolia,Juglans regia,Acer oblongum,Castanea mollissima,etc.The intensity of intra-specific competition of T.yunnanensis was similar to that of inter-specific competition, the intra-and inter-specific competition intensity of T.yunnanensis decreased with the increase of the tree diameter.The relationship between the competition intensity and DBH of T.yunnanensis followed the power function(CI=AD~(-B)).When the DBH was greater than 10 cm, the competitive pressure on T.yunnanensis was less and tended to stabilize.The model can be used to predict the intra-and inter-specific competition of T.yunnanensis.

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