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用频次分布比较法、聚集度指标法、Ｉｗａｏ的ｘ－ｘ回归式法以及Ｔａｙｌｏｒ幂法则等测定方法研究天然针阔混交林中马尾松种群空间分布格局的结果表明：其分布遵从负二项分布和奈曼－Ａ型分布，且以奈曼－Ａ型分布为佳．分布的基本成分是个体群，以小规模的丛生聚集，丛的大小约为２～３株；根据Ｉｗａｏ的ｘ－ｘ回归式，在可靠性９５％、精确度９０％时，天然针阔混交林中马尾松种群最适抽取样方数在６０～８０之间，并随单位面积马尾松种群平均株数密度的增加而减少．
The spatial distribution pattern of Pinus massoniana population in natural coniferous and broad-leaved mixed forests was determined by frequency distribution comparison method, degree of aggregation index method, Iwao’s x-x regression method and Taylor’s power law. The results show that the distribution follows the negative binomial distribution And Neyman-A distribution, and the Neyman-A distribution is preferred. The distribution of the basic components of the individual groups, clusters of small clusters, the cluster size of about 2 to 3 strains; According to Iwao’s x-x regression, reliability 95%, 90% accuracy, natural mixed coniferous The optimum number of sampling plots of Pinus massoniana in the forest ranged from 60 to 80, and decreased with the increase of the average number of Pinus massoniana population per unit area.