以阔叶红松林为顶极植被的小兴安岭林区,红松在原始林下天然更新不良,幼树生长缓慢,往往老龄个体远多于中、幼树个体数量,人们称为“红松林下无红松”。因而有人认为红松是衰退种,要在群落的演替中淘汰掉。本文从红松的生物学和生态学特性出发,探讨其种群动态的规律。以逐步认识这一自然实体发展变化的本质。 In the small Xinganling forest with the broad-leaved Korean pine forest as the top vegetation, P. koraiensis is naturally poorly regenerated under primitive forests. The young trees tend to grow slowly, often far more than the number of middle-aged and young-tree individuals. They are known as “ Korean pine”. Therefore, some people think that Korean pine is a declining species, to be eliminated in the community succession. Based on the biological and ecological characteristics of Pinus koraiensis, this paper discusses the rules of its population dynamics. So as to gradually understand the essence of the development and change of this natural entity.