油松种群不同龄级的空间格局与关联性分析  

Analysis of Spatial Pattern and Spatial Association of Pinus tabulaeformis Populations at Different Developmental Stages

作　　者：张玲[1] 苗艳明[1] 孙永星[1] 毕润成[1] 

机构地区：[1]山西师范大学生命科学学院,临汾041004

出　　处：《植物研究》2012年第1期91-98,共8页Bulletin of Botanical Research

基　　金：山西省留学基金项目(20081073)资助

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20～30cm,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。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,20-30cm,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.

关 键 词：油松 点格局分析 尺度 龄级 关联性 

分 类 号：S791.254[农业科学—林木遗传育种]