蒙古栎种群空间分布格局及其动态的研究

Spatial Distribution Pattern of Mongolian Oak Population and Its Dynamics

应用概率函数和聚集强度指标对蒙古栎种群的空间分布格局进行了拟合和分析比较．种群各层次均呈聚集型分布，但在更新层→演替层→主林层的过渡中，聚集强度由大变小，但最终没有消除聚集的特性．在蒙古栎林分生长的立地上，群聚有利于种的存活和延续，一定程度上也决定于种的繁殖特性和林隙的形成．

The spatial patterns of Mongolian oak (Quercus mongolica) population during different developmental stages are modelled,all displaying aggregated distribution. Further analysis and comparison show that aggregation intensity declines with development of population,but the aggregation state still remains,and it is shown that on the site of Mongolianoak forest,aggregated ditribution,which is determined to some extent by both the reproductive characteristic of species and the forest gap formation,is favourable for the survival and maintenance of the population.