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用方差均值比率t 检验及多个聚集强度指标测定结果表明,马尾松幼龄种群的分布格局以集群分布为主,林窗下集群分布比例略高于林缘和林内。集聚程度是林缘> 林内> 林窗。各样地中1 年生幼苗的集聚程度大于整个种群。从1 年生苗到随后各年龄组,分布格局的变化趋势由集群分布变为随机分布,或保持集群分布但集聚程度减小,也有经随机分布又变为集群分布的。林窗种群的平均斑块面积为4 m2 ,林缘为8 ～16 m2 ,以16 m2 为多,林内种群斑块面积变化多样无明显规律。
The test of variance mean t-test and multiple aggregation intensity indexes showed that the population distribution of young masson pine was dominated by the cluster distribution, and the proportion of cluster distribution under the canopy was slightly higher than that of the forest margin and the forest. Agglomeration degree is the edge of forest> forest> forest window. The concentration of 1-year-old seedlings in all kinds of land was greater than that of the whole population. From 1 year old seedlings to each subsequent age group, the trend of distribution pattern changed from cluster distribution to random distribution, or kept the cluster distribution but reduced the degree of aggregation, and also changed randomly and cluster distribution. The average size of the forest gap was 4 m2, and the margin of the forest was 8 ~ 16 m2. There was no obvious regular pattern of patch area in the forest.