Abstract: Based on thorough ivestigation and study, we first reported the resources of pteridophyte in Mao'ershan area, total 13 families, 23 genera and more than 40 species. According to different ecological requires of various pteridophyte populations, a form which expressed the adaptability between some main pteridophyte populations and ecological factors such as illumination and moisture was designed. The paper specially emphasized the homogeneity between biological characteristic and ecological enviroment of population, and also discussed the adaptable habitat in Mao'ershan of pteridophyte populations.

Key words: pteridophyte, population, adaptable habitat