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作 者 ：张玲;苗艳明;孙永星;毕润成*

期 刊 ：植物研究 2012年 32卷 1期 页码：91-98

关键词：油松；点格局分析；尺度；龄级；关联性；

Keywords:Pinus tabulaeformis, point pattern analysis, sampling scale, age-class, spatial association,

摘 要 ：在霍山七里峪林场，选择典型油松林样地进行实地调查，运用点格局分析方法，对油松种群不同龄级的分布格局及其相互关系进行了研究。结果表明：(1)油松的龄级分布呈峰型，中间龄级个体多，主要集中在20～30 cm，小龄级和大龄级则相对较少；(2)油松的7个龄级个体的空间格局呈集群分布，其中龄级4、龄级5和龄级6的个体集群分布特征更为明显,同时表现出小尺度下呈集群分布，在大尺度下趋向于随机分布；(3)各龄级间的关系基本上呈显著正关联，3～5龄级的个体间正关联性更强，这种正关联的关系有利于油松种群对资源的充分利用,以确保种群的生存和发展。

Abstract:In Huoshan Qiliyu woodland, a field survey was made on the typical Pinus tabulaeformis, and the distribution of P.tabulaeformis at different age-classes and its co-relationship were studied. The results show that: (1)The distribution of the age-classes appears kurtosis, i.e. the majority is the middle-aged, 20-30 cm, whereas the numbers of young and old are comparatively less; (2)The spatial distribution of these seven age-classes tends to be in groups, in which ages 4, 5 and 6 are more obvious. Meanwhile, it centralizes in groups in small-scale and tend to be in random distribution in large-scale; (3)The co-relationship between different age-classes is significantly positive correlated, of which ages from 3 to 5 are more significant. This significantly positive correlation is beneficial for the P.tabulaeformis to make full use of the resources in order to guarantee the living and development of the groups.

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