濒危植物手参生存群落主要物种的生态位特征及其种间联结
Ecological niches and interspecific associations of dominant species within an endangered Gymnadenia conopsea(L.)R.Br.community
程永生 1王甜语 1奚为民 2闫明1
作者信息
- 1. 山西师范大学生命科学学院,太原 030031
- 2. Department of Biological and Health Sciences,Texas A & M University-Kingsville,Kingsville,TX 78363,USA
- 折叠
摘要
通过对分布于山西省历山国家级自然保护区舜王坪的濒危植物手参(Gymnadenia conopsea(L.)R.Br.)所处群落进行实地调查,探讨其生存群落的生态位特征、种间关系及群落稳定性.结果显示:(1)手参生存群落植物共有48种,隶属于22科、42属,群落草本层物种丰富度高.手参种群聚集分布于小生境中,数量稀少,对生境要求较高,属于特定区域分布种;(2)手参的生态位最宽,与其他物种的重叠程度较高,物种之间竞争激烈且群落处于不稳定状态;(3)在手参的生存群落中,各物种的种间联结关系不显著,趋向于相互独立;且手参与主要草本植物物种间尚未形成稳定的种间关系,所在群落处于演替阶段的中前期,稳定性较弱,容易受到破坏而发生退化.
Abstract
Based on an ecological survey of the endangered Gymnadenia conopsea(L.)R.Br.community dis-tributed in Shunwangping,Lishan National Nature Reserve,Shanxi Province,China,the ecological niche characteristics,interspecific relationships,and stability of the community were explored.Results showed that:(1)The community exhibited high species richness,comprising 48 plant species from 42 genera and 22 fami-lies.As an endemic species,G.conopsea occupied a specialized ecological niche characterized by low popu-lation density and stringent habitat requirements.(2)G.conopsea demonstrated the broadest ecological niche,with a high degree of overlap with other species,leading to heightened interspecies competition and relative instability within the community.(3)In the surviving G.conopsea community,interspecies associa-tions were relatively weak,indicating a tendency toward independence among species.Furthermore,the inter-specific relationships among the predominant herbaceous species were not fully developed.Our findings indi-cate that the community is currently in an intermediate to early stage of succession,exhibiting low stability and susceptibility to potential disruption and degradation.Overall,this study highlights the interdependence and re-source utilization capabilities among various species within the G.conopsea community.
关键词
濒危植物/手参/生态位/种间联结/群落稳定性Key words
Endangered plants/Gymnadenia conopsea/Ecological niche/Interspecific association/Community stability引用本文复制引用
出版年
2024
NETL
NSTL
万方数据