大明山云贵山茉莉种群的小尺度空间格局

Fine-scale Spatial Pattern of Huodendron biaristatum Population in Daming Mountain Nature Reserve,Guangxi

种群的空间分布类型与空间关联性是空间格局研究的两个主要内容。应用点格局分析方法对广西大明山云贵山茉莉种群在0～10m尺度上的空间格局及其随尺度的变化规律进行了研究。结果表明：1．云贵山茉莉种群在不同尺度（0～10m）上的空间分布差异不显著，均呈随机分布；2．在0～6．5m尺度上，云贵山茉莉种群3个龄级均匀分布特征比较明显，而在6．5～10m尺度上则为随机分布；3．龄级1和龄级2个体在0—10m尺度上都有显著的正关联；龄级1和龄级3个体在尺度0～2m上呈正关联，而在2～10m尺度上无关联；龄级2和龄级3个体在研究尺度上无关联。

Spatial distribution type and spatial association are two main contents of spatial pattern of population. Fine-scale （0- 10 m） spatial pattern of Huodendron biaristatum population in Darning mountain nature reserve, Guangx and its scaling principles were studied using the method of point pattern analysis. The results showed that ： （1） The spatial distribution types of Huodendron biaristatum population at different scales （0 -10 m） were not significantly different, and had a regular distribution pattern. （2） The spatial distributions of three age-classes of Huodendron biaristatum population were regular at 0 - 6.5 m scales, but random at 6.5 - 10 m. （3） At the scale range of 0 - 10 m, the relationship between individuals in age-class 1 ＆ 2 of Huodendron biaristatum population was a positive spatial association ; The spatial association of age-class 1 ＆ 3 of this population was positive at 0 - 2 m scales, but independent spatial association at 2 -10 m scales; Independent spatial association of age-class 2 ＆ 3 was existed at all scales examined.