生物多样性 ›› 2012, Vol. 20 ›› Issue (4): 517-521.doi: 10.3724/SP.J.1003.2012.05215

• 生物编目 • 上一篇    下一篇

湖南丹霞地貌区蕨类植物多样性

严岳鸿1, 2*, 何祖霞1, 2, 马其侠1, 周喜乐1, 陆奇勇3   

  1. 1上海辰山植物园(中科院上海辰山植物科学研究中心), 上海 201602
    2湖南科技大学生命科学学院, 湖南湘潭 411201
    3湖南省通道县林业局, 湖南通道 418500
  • 收稿日期:2011-11-28 修回日期:2012-03-28 出版日期:2012-07-20
  • 通讯作者: 严岳鸿 E-mail:yan.yh@126.com
  • 基金项目:

    香港嘉道理农场暨植物园研究基金资助;国家科技基础条件平台工作重点项目;上海市绿化和市容管理局攻关项目

The pteridophyte diversity of the Danxia landform in Hunan Province, China

Yuehong Yan1, 2*, Zuxia He1, 2, Qixia Ma1, Xile Zhou1, Qiyong Lu3   

  1. 1Chen Shan Botanical Garden (Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences), Shanghai 201602

    2School of Life Science, Hunan University of Science and Technology, Xiangtan, Hunan 411201

    3Tongdao County Forestry Bureau, Tongdao, Hunan 418500
  • Received:2011-11-28 Revised:2012-03-28 Online:2012-07-20
  • Contact: Yuehong Yan E-mail:yan.yh@126.com

丹霞地貌是有别于石灰岩地貌和花岗岩地貌的特殊地貌类型, 发育着较为独特的植被类型和植物区系。我们于2007–2010年间对湖南新宁崀山、茶陵浣溪、平江石牛寨、资兴程江口、浏阳达浒、通道万佛山、沅陵五强溪夸父山、溆浦思蒙等地丹霞地貌的蕨类植物进行了广泛调查, 报道了湖南丹霞地貌区蕨类植物31科66属183种的详细名录。其中, 无腺姬蕨(Hypolepis polypodioides)、隐囊蕨(Notholaena hirsuta)、仙霞铁线蕨(Adiantum juxtapositum)、百山祖短肠蕨(Allantodia baishanzuensis)、肉质短肠蕨(A. succulenta)、骨碎补铁角蕨(Asplenium ritoense)、钝齿耳蕨(Polystichum deltodon var. henryi)、无盖耳蕨(P. gymnocarpium)、单羽耳蕨(P. simplicipinnum)、二型肋毛 蕨(Ctenitis dingnanensis)等9种为湖南新记录种。湖南丹霞地貌的蕨类植物种类组成主要有鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科等较大科及鳞毛蕨属(Dryopteris)、卷柏属(Selaginella)、铁角蕨属(Asplenium)、短肠蕨属(Allantodia)和凤尾蕨属(Pteris)等较大属。生态适应特点分析表明丹霞地貌既有喜钙质土的种类, 也有喜酸性土的种类, 仙霞铁线蕨和无盖耳蕨可能是丹霞地貌的特有植物, 因而具有石灰岩地貌蕨类植物区系和花岗岩地貌蕨类植物区系之间的过渡性特点。建议将垫状卷柏(Selaginella pulvinata)、福建观音座莲(Angiopteris fokiensis)、仙霞铁线蕨、骨碎补铁角蕨、鞭叶蕨(Cyrtomidictyum lepidocaulon)、无盖耳蕨等种类列为丹霞地貌蕨类植物中的优先保护种类, 将通道万佛山三十六湾、湖南沅陵夸父山列为丹霞地貌蕨类植物的优先保护地区。

关键词: 种子捕食, 种子扩散, 植物更新, 协同进化, 互惠关系, 群落演替, 生态系统功能, 生物多样性

The Danxia landform is a unique landscape type with a high level of floral endemism. Herein, we report the fern flora of Danxia landform in Hunan Province. We complete comprehensive surveys of pteridophytes in the Danxia landform areas of Hunan between 2007 and 2010. We report an annotated species checklist in this paper, including 183 species and 66 genera in 31 families. Nine species, including Hypolepis polypodioides, Notholaena hirsuta, Adiantum juxtapositum, Allantodia baishanzuensis, A. succulenta, Asplenium ritoense, Polystichum deltodon var. henryi, P. gymnocarpium, P. simplicipinnum and Ctenitis dingnanensi, are reported as new records to Hunan. The families with more than 10 species include the Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae, and the genera with more than 8 species are Dryopteris, Selaginella, Asplenium, Allantodia and Pteris. This list not only includes calciphilous ferns, but also acidophilous and endemic ferns restricted to the Danxia landform (e.g., A. juxtapositum and P. gymnocarpium). It is hypothesized that the fern flora of the Danxia landform may be an intergradation type between Karst landform and granite landform. Lastly, we provide recommendations for the longterm protection of the floral diversity of the Danxia landform.

Key words: seed predation, seed dispersal, plant regeneration, coevolution, mutualism, community succession, ecosystem function, biodiversity

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