异质环境条件下秃杉种群的更新

Study on the regeneration of Taiwania flousiana Gaussen population and its heterogeneous environmental conditions

对贵州雷公山秃杉(Taiwania flousiana Gaussen)种群,采用常规的群落学野外调查方法,结合秃杉种群径级结构,用二元属性数据的β多样性指数,分析了秃杉种群更新与环境条件的关系.结果表明:①β多样性指数较好的反映光因子是形成秃杉群落环境异质性的主要因子.②秃杉群落的更新受群落内部光因子的影响.③秃杉种群的更新是林窗更新.

The paper intends to apply the regular community investigation and the β diversity index, which combine the population diameter structure, for analyzing the relationship between the regeneration of Taiwania flousiana Gaussen population in Leigong Mountain of Guizhou Province and its environmental conditions. The result shows.① light factor is the main factor in forming the heterogeneous environment. ②the regeneration of Taiwania flousiana Gaussen population is affected by the internal light factor. ③the regeneration of Taiwania flousiana Gaussen population belongs to the gap regeneration.