雷公山自然保护区青牛胆野生资源调查及群落结构研究  

Investigation of Wild Resources and Community Structure of Tinospora sagittata in Leigong Mountain Nature Reserve

作　　者：李登江 古定豪 余德会 张夏军 郑德谋 叶荣欢 LI Deng-jiang;GU Ding-hao;YU De-hui(Guizhou Leigong Mountain National Nature Reserve Administration,Leishan,Guizhou 557100)

机构地区：[1]贵州雷公山国家级自然保护区管理局,贵州雷山557100

出　　处：《安徽农业科学》2023年第24期101-103,110,共4页Journal of Anhui Agricultural Sciences

基　　金：贵州省林业局青年科技人才培养对象专项基金项目(黔林科合J字〔2021〕07号);2021年第三批省级林业发展改革资金项目(黔东南财建〔2022〕20号)。

摘　　要：采用最小面积法,在雷公山自然保护区内具有代表性的青牛胆分布区域选取典型的青牛胆群落进行调查研究。结果表明:该区野生青牛胆多分布在沟谷地带的林缘、山坡脚、小溪两边的石缝或阴暗潮湿处,林下和田土边也有分布,但数量较少;植被类型多为针阔混交林、常绿落叶阔叶混交林;土壤为黄壤,土壤中砂砾含量较多;海拔在700~1400 m,种群密度小,在0.014~0.027株/m^(2),区内青牛胆野生资源很少,面临濒危。青牛胆群落共有维管束植物59科89属95种,群落优势科属明显,科属组成复杂,物种丰富,物种主要集中在含1种的科与含1种的属内。物种数随调查样方面积的增大而增加,100 m^(2)样方内物种数量显著增加,而后逐渐趋于平缓,至样方面积为512 m^(2)时,该群落物种数为95种。The minimum area method was used to investigate the typical Tinospora sagittata community in the typical Tinospora sagittata distribution area in Leigong Mountain Nature Reserve.The results showed that the wild Tinospora sagittata mainly distributed in the forest margin,hillside foot,stone crevices on both sides of the stream or dark damp places in the gully zone,and also in the forest and the soil edge of the field,but the number was small.The vegetation types were mostly coniferous broad-leaved mixed forest,evergreen deciduous mixed broad-leaved forest.The soil is yellow soil with more sand and gravel content.The altitude is 700-1400 m and the population density is low,ranging from 0.014 to 0.027 plants/m^(2).There are few wild resources of Tinospora sagittata in the area,which is endangered.In addition,the Tinospor asagittata community consists of 59 families,89 genera and 95 species of vascular plants,and the dominant family and genus are obvious.The composition of family and genus is complex,and the species are mainly concentrated in the family with 1 species and the genus with 1 species.The number of species increased with the increase of the sample volume.The number of species in 100 square meters increased significantly,and then gradually leveled off.When the sample volume was 512 m^(2),the number of species in the community was 95.

关 键 词：青牛胆 生境调查 群落结构 雷公山自然保护区 

分 类 号：S759.9[农业科学—森林经理学]