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生态位相似比例
    In this paper the niche of the main tree populations in Pinus taiwanensis forest in Gutian Mountain National Nature Reserve were measured using the formulas of niche breadth, niche similarity and niche overlap by sampling method, every plot was 20 m×20 m.
    采用样方法进行调查,每个样地面积为20m×20m。 测度主要种群的生态位宽度、生态位相似比例、生态位重叠值。
    <Abstrcat>With quantitative analyzing method, the paper explores and studies the niche breadth, the proportion of niche similarity and the niche overlap of main species of the vegetation layer in C. elevaticostata natural forests.
    采用定量分析方法,计测突脉青冈天然林主要乔木树种的生态位宽度、生态位相似比例和生态位重叠值.
    The proportion of niche similarity and the niche overlap index constitute the niche characteristics of the evergreen broad leaved woodland in subtropical forest.
    种群之间的生态位相似比例和生态位重叠值反映了亚热带常绿阔叶林的生态特征.
    The niche similarity between the species with broad niche breadths was greater than that between the species with narrow niche breadths,e. g. ,it was 0.6134 and 0.6056 between C.
    生态位宽度大的种群间生态位相似比例较高,如青冈与马银花、麂角杜鹃的生态位相似比分别为0.6134、0.6056;
    Quantitative analysis method was used to determine the niche breadth,the proportion of niche similarity and the niche overlap value of main arbor species of C. eyrei natural forest.
    采用定量分析方法,计测天然甜槠林主要乔木树种的生态位宽度、生态位相似比例和生态位重叠值。
    flavescens cocoons manifested the greatest spatial resources predominance, and the niche breadth index was 0.5441. As for the interspecies relationships, S. postornata and P. lepida were more adjacent in the utilization of trophic resources, and the indices of their niche overlap (2.6647), niche similarity (0.5199) and interspecies competition (0.7015) were all higher than those of other co-existing species.
    而黄刺蛾的茧则在空间资源利用中优于其它刺蛾,生态位宽度指数为0.5441。 在种间,桑褐刺蛾与丽绿刺蛾利用营养资源较为接近,其生态位重叠指数(2.6647)、生态位相似比例(0.5199)和种间竞争系数(0.7015)均高于其它共存种类;
    C. flavescens and S. postornata were more similar in using time resources, with the niche overlap and interspecies competition indices being 0.4846 and 0.5222, respectively, while S. postornata and P. consocia were more adjacent in the utilization of spatial resources, and had the highest indices of niche overlap (2.7495), niche similarity (0.9165), and interspecies competition (0.9959).
    黄刺蛾和桑褐刺蛾利用时间资源较相似,生态位相似比例和种间竞争系数分别为0.4846、0.5222; 而桑褐刺蛾和褐边绿刺蛾则在空间资源利用中较为接近,其生态位重叠指数(2.7495)、生态位相似比例(0.9165)和种间竞争系数(0.9959)在共存种间均为最高。
 

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