大石围天坑群区蕨类植物资源调查与分析

Resource Investigation and Application Research of Pteridophyte Flora Resource in the Area of Dashiwei Tiankeng Group

为了更好地了解和可持续开发利用大石围天坑群区蕨类植物的资源,采用野外实地调查、标本采集和鉴定等方法,对大石围天坑群区内现有的蕨类植物进行了较为深入的调查研究。结果表明:大石围天坑群区有蕨类植物227种,隶属40科84属,其中优势科有鳞毛蕨科(33种)、水龙骨科(32种)、蹄盖蕨科(22种)、铁角蕨科(16种)、风尾蕨科(15种)和金星蕨科(14种);优势属有凤尾蕨属(15种)、铁角蕨属(13种)、鳞毛蕨属(12种);小科和单种属较多,区内蕨类植物有明显的热带性质,蕨类植物资源丰富。本研究可以为区域经济开发过程中对生物多样性保护提供资料参考。

In order to understand the state of fern resource in the area of Dashiwei Tiankeng group,the species com？position,floristic characteristics and the living condition and conservation were studied by the methods of literature and field surveys.The result showed that there were 227 species belonging to 84 genera in 40 families,and the domi？nant families were Dryopteridaceae（33 species）、Polypodiaceae（32 species）、Athyriaceae（22 species）、Aspleniace？ae（16 species）、Pteridaceae（15 species）and Thelypteridaceae（14 species）;the dominant genera were Pteris（15 species）、Asplenium（13 species）and Dryopteris（12 species）. At last,the related suggestion was put forward about conservation and sustainable development of biodiversity protection.