广东和平黄石坳省级自然保护区蕨类植物调查及区系组成分析

Fern Survey and Flora Analysis in Heping Huangshi’ao Provincial Nature Reserve,Guangdong Province

通过对广东和平黄石坳省级自然保护区蕨类植物样方调查和样线调查,分析蕨类植物物种分布情况和区系组成发现:①保护区内蕨类植物32科62属116种,分别占保护区内维管植物科属种总数的15.38%、8.33%和7.68%;②与上一次调查相比,蕨类珍稀植物5种,种类和保护等级均未变化,且保护情况较乐观,新纪录到蕨类植物7种;③科、属的区系组成分均体现了热带成分占极大的优势,泛热带分布比例最高,占比达到73.68%和45.83%。

Based on quadrat survey and transect survey of fern in Heping Huangshi'ao Provincial Nature Reserve,Guangdong Province,this paper analyzes the species distribution and flora composition of fern.The result indicates:①There are 116 species of ferns belonging to 62 genera and 32 families in the reserve,accounting for 7.68%,8.33%and 15.38%of the total number of vascular plants in the reserve,respectively.②Compared with the last survey,the 5 species of rare fern and their protection level stay the same with an optimstic protection situation.Furthermore,7 species of ferns are newly recorded;③The flora of fern’s family and genera reflect the huge advantage of tropical elements,and the proportion of Pan tropical distribution ranks the highest,accounting for 73.68%and 45.83%.