Abstract:The seeds of Castanopsis forgesii from evergreen broadleaved forest in Tiantong National Forest Park in Zhejiang Province were collected and embedded in the forest and in gaps to investigate seed germination and the growth of the seedlings. Germination rates of the seeds under forest and in gaps were 33.3±2.l％ and 31.7±7.1％, respectively, showing no obvious difference in the two habitats. Mean heights of one-year-old seedlings were 5.88±1.09 cm and 6.56±1.2 cm, respectively, showing that the difference was obvious．Biomass allocation of the seedlings in the gaps tended to be more in the roots，while those under forest was more in leaves.