Seed dispersal,dormancy, seedbank and regeneration of Amur corktree

Amur corktree (Phellodendron amurense Rupr.) is one of the important accompanying species of Korean pine (Pinus Koraiensis Sieb et Zuce) broadleaved forest in northeast China. This paper reports on the seed dispersal, dormancy, seed bank and regeneration of amur corktree. Seeds of amur corktree arc dispersed mainly by the aid of birds and gravity. The aril of the seeds may increase seed longevity. In natural secondary forests, the store of the seed bank may reach 750, 000 seeds per heetare. Regeneration was correlated wirh disturbance, and was best under intensive disturbance.