The Koream pine seedlings are seldom found in primary Koream pine forests but many are often discovered in Picea and Abes forests. The phenomenon has been difficult to be explained for a long time.

• 原始红松(Pinus koraiensis)林中很少见到红松幼树,而云杉(Picea)和冷杉(Abes)林内则发现许多红松幼苗,对此现象长期以来很难解释。