Abstract:In order to understand the differentiation and regeneration dynamic of Pinus taiwanensis community in Daiyun Mountain, the regeneration niche of main species in the community was studied by using improved models of regeneration niche width and niche overlap. The results showed that different species used different spatial resources, different species had different regeneration niche width, and regeneration niche overlaps among species were also different. Pinus taiwanensis was dominant in the community. Regeneration niche overlaps between Pinus taiwanensis and other species ranged from 0.1 to 0.39, which indicated that P. taiwanensis and other species shared common?resource utilization spectrum. The regeneration niche overlaps between P. taiwanensis and Eurya rubiginosa, Vaccinium carlesii were high, which these species had obvious competition and rejection effects, so that the seedlings and saplings of P. taiwanensis was difficult to generate. Therefore, it was suggested that survival of seedlings and saplings of P. taiwanensis should increase for making community stable by strengthening management and protection.