摘要
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<25m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>8m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-classⅠexhibited a clumped spatial distribution at the scale of r25 m.The age-classⅡexhibited 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 r8 m.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2012年第2期9-15,共7页
Scientia Silvae Sinicae
基金
国家自然科学基金项目(30970292
30840020)
关键词
青檀种群
琅琊山
点格局分析
空间分布格局
空间关联
population of Pteroceltis tatarinowii
Langya Mountain
point pattern analysis
spatial distribution pattern
spatial associations
