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油松种群不同龄级的空间格局与关联性分析
引用本文:张玲,苗艳明,孙永星,毕润成. 油松种群不同龄级的空间格局与关联性分析[J]. 植物研究, 2012, 32(1): 91-98
作者姓名:张玲  苗艳明  孙永星  毕润成
作者单位:山西师范大学生命科学学院
基金项目: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20~30 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。

关 键 词:油松;点格局分析;尺度;龄级;关联性

Analysis of Spatial Pattern and Spatial Association of Pinus tabulaeformis Populations at Different Developmental Stages
ZHANG Ling,MIAO Yan-Ming SUN Yong-Xing BI Run-Cheng. Analysis of Spatial Pattern and Spatial Association of Pinus tabulaeformis Populations at Different Developmental Stages[J]. Bulletin of Botanical Research, 2012, 32(1): 91-98
Authors:ZHANG Ling  MIAO Yan-Ming SUN Yong-Xing BI Run-Cheng
Affiliation:(College of Life Science,Shanxi Normal University,Linfen 041004)
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,20-30cm,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.
Keywords:Pinus tabulaeformis  point pattern analysis  sampling scale  age-class  spatial association
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