摘要
采用样地调查法对广西雅长兰科植物国家级自然保护区(以下简称“雅长保护区”)内天贵卷瓣兰(Bulbophyllum tianguii)的生境、资源状况和伴生群落特征等进行调查和分析,为该物种的保护和利用提供科学依据。结果表明:天贵卷瓣兰在雅长保护区内分布于106°24′27.78″-106°24′49.96″E,24°50′22.22″-24°51′2.18″N,海拔950-1281 m,多见于林木盖度为40%-80%的常绿落叶阔叶混交林下。天贵卷瓣兰一般附生于喀斯特石山上部或近山顶的岩石上,及天坑顶部的陡峭石壁上,多见于半阳坡;根部土壤为落叶腐殖土,少数无土,部分植株亦可附生于腐殖树茎或乔木树干上,常与苔藓类植物生长在一起。雅长保护区内发现4个天贵卷瓣兰种群,总计840个基株,多以克隆分株繁殖为主,呈聚集分布。4个伴生群落共记录有维管植物79种,隶属44科71属,单种科有29个科,单种属有64个属,植物分化程度较低,群落组成复杂。属的区系成分以热带分布占优势(占非世界分布的67.21%),温带分布也占有一定比例,其生境具有亚热带向温带过渡的特点。天贵卷瓣兰常与云贵鹅耳枥(Carpinus pubescens)、石斑木(Rhaphiolepis indica)、钩齿鼠李(Rhamnus lamprophylla)、针齿铁仔(Myrsine semiserrata)、光石韦(Pyrrosia calvata)等植物伴生。天贵卷瓣兰对生境有较强的依赖性,对其生境的保护尤为重要。
The habitat,resource status and concomitant community characteristics of Bulbophyllum tianguii in Guangxi Yachang Orchid National Nature Reserve were investigated and analyzed by sample plot investigation method,so as to provide scientific basis for the protection and utilization of this species.The results showed that the B.tianguii distributed in 106°24′27.78″-106°24′49.96″E,24°50′22.22″-24°51′2.18″N,in Yachang Nature Reserve,with an altitude of 950-1281 m.It was mostly found under the evergreen deciduous broad leaved mixed forest with forest coverage of 40%-80%.The B.tianguii is usually attached to the rocks on the upper part of the karst rocky mountain or near the top of the mountain,and on the steep stone wall at the top of the Tiankeng.It is mostly found on the semi sunny slope.The root soil is deciduous humus soil,and a few are soilless.Some plants can also be attached to the stems of humus trees or tree trunks,and often grow together with bryophytes.Four B.tianguii populations were found in Yachang Nature Reserve,with a total of 840 stems,and most of them were clonal ramets,showing aggregated distribution.A total of 79 species of vascular plants were recorded in the four concomitant communities,belonging to 44 families and 71 genera.There were 29 families in the single family,and 64 genera in the single genus.The differentiation degree of plants was low,and the community composition was complex.The floristic composition of the genus is dominated by tropical distribution(accounting for 67.21%of the non cosmopolitan distribution),and the temperate distribution accounts for a certain proportion.Its habitat has the characteristics of transition from subtropical to temperate.The B.tianguii is often associated with Carpinus turczaninowii,Rhaphiolepis indica,Rhamnus lamprophylla,Myrsine semiserrata and Pyrrosia calvata.The B.tianguii is highly dependent on the habitat,and the protection of its habitat is particularly important.
作者
柴胜丰
秦惠珍
唐健民
罗亚进
李露
邹蓉
韦霄
CHAI Shengfeng;QIN Huizhen;TANG Jianmin;LUO Yajin;LI Lu;ZOU Rong;WEI Xiao(Guangxi Institute of Botany,Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences,Guilin,Guangxi,541006,China;Guangxi Yachang Orchid National Nature Reserve Management Center,Baise,Guangxi,533209,China;Guangxi State Owned Yachang Forest Farm,Baise,Guangxi,533000,China)
出处
《广西科学院学报》
2022年第2期138-146,共9页
Journal of Guangxi Academy of Sciences
基金
广西林业科技推广示范项目(桂林科字[2021]第28号)
中央引导地方专项科技创新基地建设类项目(桂科ZY21195035)资助。
关键词
天贵卷瓣兰
生境
伴生群落
区系成分
群落结构
Bulbophyllum tianguii
habitat
concomitant communities
floristic composition
community structure
