植物研究 ›› 2024, Vol. 44 ›› Issue (1): 34-44.doi: 10.7525/j.issn.1673-5102.2024.01.006

• 系统与进化 • 上一篇    下一篇

深圳双扇蕨依存环境的植物群落学特征

马钰琦1, 李宇惠1, 林琳2, 沈悦1, 顾钰峰3, 王发国1()   

  1. 1.中国科学院华南植物园,广东省应用植物学重点实验室,广州 510605
    2.深圳市生态环境局大鹏管理局,深圳 518116
    3.深圳市兰科植物保护研究中心,深圳 518114
  • 收稿日期:2023-03-15 出版日期:2024-01-20 发布日期:2023-12-27
  • 通讯作者: 王发国 E-mail:wangfg@scbg.ac.cn
  • 作者简介:E-mail:wangfg@scbg.ac.cn
    马钰琦(1999—),男,硕士研究生,主要从事植物资源与生物大数据分析。
  • 基金资助:
    大鹏新区典型生境生物多样性调查评估项目(E234071001);广东省科技计划项目(2021B1212110004)

Phyto-community Characteristics of the Dependent Environment of Dipteris shenzhenensis

Yuqi MA1, Yuhui LI1, Lin LIN2, Yue SHEN1, Yufeng GU3, Faguo WANG1()   

  1. 1.South China Botanical Garden,Chinese Academy of Sciences,Guangdong Provincial Key Laboratory of Applied Botany,Guangzhou 510650
    2.Dapeng Administration Bureau of Shenzhen Ecological Environment Bureau,Shenzhen 518116
    3.The Orchid Conservation and Research Center of Shenzhen,Shenzhen 518114
  • Received:2023-03-15 Online:2024-01-20 Published:2023-12-27
  • Contact: Faguo WANG E-mail:wangfg@scbg.ac.cn

摘要:

深圳双扇蕨(Dipteris shenzhenensis)是仅在深圳分布的极度濒危(CR)植物。对该种占优势群落进行植物群落学研究分析,结果表明:深圳双扇蕨群落共有维管植物49科73属85种,优势种有深圳双扇蕨大头茶(Gordonia axillaris)、谷木叶冬青(Ilex memecylifolia)、竹叶青冈(Cyclobalanopsis neglecta)、吊钟花(Enkianthus quinqueflorus)、豺皮樟(Litsea rotundifolia var. oblongifolia)、芒萁(Dicranopteris pedata);植株个体随着树木高度增加而减少,呈现“倒J”型分布,是亚热带地区明显特点;各生活型物种多样性及均匀度指数呈现“中间高两头低”的态势;对相同地区不同群落物种多样性指数进行T检验,证明不同群落之间多样性水平无显著差异,同属生态演替的稳定阶段;生态位分析揭示了深圳双扇蕨在群落中的生存状态,说明该种并非广布种,对环境要求苛刻且对资源竞争力差,在群落演替中存在灭绝风险;种间联结分析揭示了该物种与其他优势草本的种间关系,找到了可能的互补与竞争植物。

关键词: 深圳双扇蕨, 物种多样性, 群落结构, 群落演替, 生态位

Abstract:

Dipteris shenzhenensis is a critically endangered(CR) plant distributed only in Shenzhen. The phyto-community analysis of this dominant community was studied and analyzed, and the results showed that: there were 85 species, 73 genera and 49 families of vascular plants in Dipteris shenzhenensis community, the dominant species included Gordonia axillaris, Ilex memecylifolia, Cyclobalanopsis neglecta, Enkianthus quinqueflorus, Litsea rotundifolia var. oblongifolia, Dipteris shenzhenensis, Dicranopteris pedataPlant individuals in this community decreased with the increase of tree height, showing an “Inverted J” type distribution, which was an obvious characteristic in subtropical areas. The diversity and evenness index of all life forms showed a trend of “high in the middle and low in the two ends”; The T test of the species diversity index of different communities in the same area proved that there was no significant difference in diversity level between different communities, which belonged to the stable stage of ecological succession; Niche analysis revealed the survival status of Dipteris shenzhenensis in the community, indicating that this species was not widespread, demanding for environment and poor competitiveness in resources, and there was a risk of extinction during community succession; Interspecific association analysis revealed the interspecific relationship between this species and other dominant herbs, and identified possible complementary and competitive plants.

Key words: Dipteris shenzhenensis, species diversity, community structure, community succession, niche

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