论文部分内容阅读
通过对安徽黄山甜槠〔Castanopsiseyrei(Champ.exBenth.)Turtch.〕种群大小级、存活曲线和分布格局的研究,探讨了该地区甜槠种群的结构和分布格局特征。结果表明甜槠种群具有增长型和平稳增长型的动态特征;同时,甜槠种群呈集聚分布格局,这可能与甜槠的生物学特性有关;但在不同发育阶段,种群分布格局不同,随着种群年龄的增加和径级的增大,分布格局由集聚分布变为随机分布,这可能主要由于种内和种间竞争引起的种群数量动态变化所致。或许这也是甜槠种群的生存策略之一。
Castanopsiseyrei (Champ. Ex Benth.) Turtch. Population size, survival curve and distribution pattern of the population, the structure and distribution pattern of the sweet 槠 population in this region were discussed. The results showed that the sweet 槠 population had the dynamic characteristics of growth type and steady growth type. At the same time, the population structure of sweet 槠 was clustered and distributed, which may be related to the biological characteristics of 槠 槠. However, the population distribution pattern differed at different developmental stages. The increase of population age and the increase of diameter class, the distribution pattern changed from a cluster distribution to a random distribution, which may be mainly due to the dynamic change of populations caused by species and interspecific competition. Perhaps this is one of the survival strategies of the sweet-tipped poplar.