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利用样地调查方法,以物种重要值作为资源状态指标,应用Levins生态位宽度公式和Levins生态位重叠公式对普陀山主要植物种进行了生态位宽度和生态位重叠计算。结果表明:普陀山主要植物群落中,青冈(Cyclobalanopsis glauca)、茶(Camellia sinensis)、薹草(Carex tristachya)的生态位宽度分别在乔、灌、草本层中占有优势地位;而且,各层植物种之间有着不同程度的重叠,表现为草本层>乔木层>灌木层;总体上,各植物种的生态位重叠较小,生态位分化明显,资源利用方式分化较大;分布频度是影响植物种生态位宽度、生态位重叠大小的主要因素之一,分布频度越大,则生态位宽度越大,与其他植物种形成生态位重叠的机率也越大。
Based on the sample survey and the important species value as the resource status indicator, the niche breadth and niche overlap of major plant species in Mount Putuo were calculated by Levins niche breadth formula and Levins niche overlap formula. The results showed that the niche breadths of Cyclobalanopsis glauca, Camellia sinensis and Carex tristachya dominated Putao Mountain plant communities in Qiao, Shrub and Herb, respectively. Moreover, There were different degrees of overlap among the species, which showed that the herb layer> arbor layer> shrub layer. In general, the niche overlap of each plant species was small, the niche differentiation was obvious, and the way of resource utilization was highly differentiated; Plant species niche width, the niche overlap size of the main factors, the distribution frequency is greater, the greater the niche breadth, the niche overlap with other plant species the greater the probability.