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为探讨马尾松幼龄种群结构 ,了解影响其变化的外动力 ,阐明种群年龄结构形成和变化的过程以及其类型与环境因子的关系 ,采用查数轮生枝盘数直接确定马尾松个体年龄的方法 ,研究了贵州省龙里林场不同生境里马尾松天然更新幼龄种群的年龄结构。共划分出 7种类型 ,其主要差异是密度、平均年龄、年龄较差和年龄分配。 87 8%的样地归属于 3种类型。年龄结构类型与所处生境类型 (林窗、林缘、林内、林外 )无明显相关。种群密度与平均年龄有线性相关。文中归纳了马尾松幼龄种群年龄结构形成的一般过程。
In order to explore the structure of young masson pine population, understand the external forces that affect its change, clarify the process of population age structure formation and change, and the relationship between its type and environmental factors, , Studied the age structure of young population of Pinus massoniana natural regeneration in different habitats of Longli forest farm in Guizhou province. A total of seven types were delineated, with the main differences being density, average age, poorer age and age distribution. 87 8% of the plots belong to 3 types. There is no significant correlation between the age structure types and the habitat types (forest gap, forest margin, forest and forest). Population density is linearly related to the mean age. The paper summarizes the general process of formation of age structure of young population of Pinus massoniana.