摘要
在野外调查和查阅文献资料的基础上,对宁镇山脉蕨类植物区系组成、分布区类型及生态类型进行了分析,并与邻近的7个蕨类植物区系相似性进行比较。结果表明:(1)宁镇山脉共有蕨类植物28科47属109种,主要科为鳞毛蕨科、金星蕨科及蹄盖蕨科,主要属为鳞毛蕨属、铁角蕨属及复叶耳蕨属,并有14种中国特有蕨类植物。(2)分布区类型以热带分布科、属为主,以东亚分布种为主,表明宁镇山脉蕨类植物区系具有亚热带向温带过渡的特征。(3)与邻近7个山区蕨类植物区系科、属、种相似性系数的比较表明,宁镇山脉与河南鸡公山亲缘关系最近,其次是浙江凤阳山和江西武夷山。(4)宁镇山脉蕨类植物可划分为湿生、石生及土生3种类型,其中石生类型有31种,湿生类型有8种,土生类型有70种。
The fern flora was analyzed in terms of floristic composition,distribution types and ecotypes through field investigation and consulting literature,and meanwhile similarity coefficient among the flora and other 7 floras were compared.The results showed that:(1)the flora was composed of 109 species,47 genera and 28 families.The representative families are Dryopteridaceae,Thelypteridaceae and Athyriaceae,and the main genera are Dryopteris,Asplenium and Arachniodes.There are 14 species endemic in Ningzhen Mountain.(2)The families and genera distribution types mainly belong to tropical elements,and the species distribution type belongs to East Asia,indicating the fern flora of Ninzhen Mountain was featured with subtropics transition to temperated area.(3)Similarity coefficient of families,genera and species showed the genetic relationship of Ningzhen Mountain is intimate to Jigong Shan in Henan,and followed by Fengyang Shan in Zhejiang and Wuyi Shan in Fujian.(4)The ferns in Ningzhen Mountain range can be divided into three types:the wet,the stone and the soil,and there are 31,8 and 70 species,respectively.
作者
朱晓宇
赵楚
田如男
ZHU Xiaoyu;ZHAO Chu;TIAN Ru'nan(College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, China)
出处
《西北植物学报》
CAS
CSCD
北大核心
2020年第4期717-723,共7页
Acta Botanica Boreali-Occidentalia Sinica
基金
江苏高校优势学科建设工程资助项目(英文标志简称:PAPD)。
关键词
宁镇山脉
蕨类植物
区系组成
分布区类型
生态类型
Ningzhen Mountain range
fern
floristic composition
distribution types
ecotypes
