利用点格局O-Ring统计法,分析安徽省琅琊山青檀种群的空间分布格局.结果表明:青檀种群趋于小龄化,种群结构呈倒“J”型,属增长型种群;种群中Ⅰ龄级个体在r＜25 m的尺度上呈集群分布;Ⅱ龄级个体呈随机分布,随龄级增大,逐渐趋于均匀分布;不同龄级间青檀个体的关联性研究表明,只有Ⅰ龄级和Ⅱ龄级个体在r＞8 m的尺度上呈正关联,其余各龄级间均无显著关联.%The spatial distribution patterns and associations of different ages of P. Tatarinowii were analysed in Langya Mountain, Anhui Province by O-Ring statistics in point patterns analysis. The results showed that the P. Tatrinowii population was of an increasing one, the age class tended to be young ages and the age structure presented a reversedly J-shaped pattern. The age-class I exhibited a clumped spatial distribution at the scale of r < 25 m. The age-class Ⅱ exhibited a random spatial distribution the others displayed the pattern from random to the well-proportioned distribution with increasing the age-class; The associations of the all different ages showed non-associations except the first and the second age-classes that were positively related at the scale of r > 8 m.
展开▼
