广东潮州凤凰山的蕨类植物

Pteridophyte Flora in Fenghuangshan,Chaozhou,Guangdong Province

经实地调查和标本研究,广东潮州凤凰山蕨类植物共有96种,隶属于31科58属。区系分析表明:该地蕨类植物具有较强的热带性质,科、属、种的分布区类型均以热带、亚热带分布型为主。热带、亚热带分布的科有13科,占41.94%,属有36属,占62.08%,其中泛热带分布属(22属,占37.93%)是最重要的分布类型;世界分布属占24.14%,温带分布属不明显,占13.79%,显示出该区蕨类植物区系从热带向亚热带的渗透和过渡性质;热带、亚热带分布的种所占比例最大(52种,占54.17%),其中以热带亚洲性质的占优势(38种,占39.58%);温带成分次之(36种,占37.5%),其中中国-日本分布性质的占优势(30种,占31.25%)。按生长基质的不同,将凤凰山蕨类植物划分为土生、石生、附生三种生态类型,其中以土生为主。按蕨类植物多样性的应用性,又可分为药用、观赏和食用蕨类植物等。

Based on field survey and specimen examination, Ptcridophytes in Fenghuangshan in Chaozhou, Guangdong Province werc studied floristically. The flora comprises 96 species of 58 genera in 31 families, of which tropical and subtropical elements consist of 52 specics, 36 genera and 13 families. Temperate elements amount to 36 species and 8 genera. Most of the ferns arc geophilic, follow by lithophytes （25%） and epiphytes （9.38%）, Conservation and utilization of fern rcsource are discussed.