桂林岩溶石山阴香种群结构的研究

Structure of Cinnamomum burmannii Population in Karst hills of Guilin

摘要:

探讨了桂林岩溶石山阴香种群的高度、胸径和冠幅以及三者间的相互关系,并采用分异指数量化了种群个体间高度、胸围和冠幅的差异程度。结果表明: (1)阴香种群个体高度集中分布在2-8 m; 胸径集中分布在2-6 m; 冠幅多集中分布在1-4 m, 少数分布在5-7 m之间; (2)阴香种群个体的高度、胸围和冠幅多数为中等分异; (3)阴香种群以幼树和小树个体占多数, 自然更新能力较好, 处于稳定的增长状态, 这将有利于增加种群结构复杂性和稳定性。

Abstract:

Population height, diameter breast height (DBH) and crown were studied in Cinnamomum burmannii population in Karst hills of Guilin, as well as their relationships. Differences in the height, DBH and crown of individuals of the population were determined by differentiation indices. Most individuals of the population were 2-8 m in height and 2-6 m in DBH. The crown sizes of most individuals were 1-4 m with a few of 5-7 m. The height, DBH and crown of C.burmannii individuals were found moderately differentiated. C.burmannii population consisted mainly of young trees with good regeneration, which is beneficial to complexity and stability of the population.