四川省九龙县中国特有种大理白前的群落特征和种间联结  

Community Characteristics and Interspecific Associations of the ChineseEndemic Species Cynanchum forrestii Schltr. in Jiulong County

作　　者：谢雨思 陈时鑫 马丹炜[1] 杨世辉 聂申明 扎西泽里 田正友 XIE Yusi;CHEN Shixin;MA Danwei;YANG Shihui;NIE Shenming;ZHAXI Zeli;TIAN Zhengyou(College of Life Science,Sichuan Normal University,Chengdu 610101,Sichuan;Chongzhou City Minghu Middle School,Chengdu 611230,Sichuan;Nationality Hospital of Jiulong Country,Sichuan Province,Jiulong 626200,Sichuan;Sichuan Jiulong Runde Chinese Herbal Medicine Technology Co.,Ltd,Sichuan Province,Jiulong 626200,Sichuan;Sichuan Jiulong County Agricultural,Animal Husbandry,Rural and Science and Technology Bureau,Sichuan Province,Jiulong 626200,Sichuan)

机构地区：[1]四川师范大学生命科学学院,四川成都610101 [2]崇州市明湖中学,四川成都611230 [3]四川省九龙县民族医院,四川九龙626200 [4]四川省九龙县润德中药材科技有限公司,四川九龙626200 [5]四川省九龙县农牧农村和科技局,四川九龙626200

出　　处：《四川师范大学学报(自然科学版)》2025年第3期375-382,共8页Journal of Sichuan Normal University(Natural Science)

基　　金：第四次全国中药资源普查(2019PC006);九龙县中藏药资源调查及研究(HX20220274)。

摘　　要：大理白前(Cynanchum forrestii Schltr.)为中国特有种药用植物,在横断山区高寒草甸中占据一定的优势地位.为了探究大理白前所在群落的稳定性和种间关系,采用样方调查法,研究横断山区九龙县尼乃沟大理白前的群落多样性以及大理白前与草本层19个种的种间联结性.结果表明:九龙县尼乃沟大理白前所在群落共有维管植物38科76属95种,2种国家二级重点保护野生植物和16种中国特有植物,属分布区类型以温带成分为主;灌木层和草本层优势种分别为小檗和禾草类.灌木层种类稀少,盖度小,草本层Shannon-Wiener指数、Simpson指数和Pielou指数均大于灌木层;草本层方差比率R_(正)V(印)=2.43>1,统计量W检验的显著性结果表明,草本层20个物种整体表现为显著正关联.大理白前与13个种群呈正联结,与7个种群呈负联结,其中与花锚呈极显著正联结,与禾草类呈极显著的负联结.九龙县尼乃沟大理白前适生地的群落稳定,特有种丰富,但是大理白前与禾草类牧草之间具有排斥性,对放牧生态系统具有一定的负面影响.Cynanchum forrestii Schltr., an endemic and medicinal species in China, occupies a dominant position in alpine meadows in the Hengduan Mountains region. To explore the stability and interspecific relationships of the community where C. forrestii is located, a sample survey method was used to study the community diversity and the interspecific relationships between C. forrestii and 19 species in the herbaceous layer in Ninai valley, Jiulong County, Hengduan Mountains. The results showed that the community where C. forrestii is located had a total of 95 species of vascular plants belonging to 76 genera and 38 families, which comprised 2 National second-level key protected wild plants and 16 endemic plants of China. The geographical distribution type of the genus was mainly composed of temperate components. The dominant species in the shrub layer and the herb layer were Berberis and grass, respectively. The shrub layer had few species and low coverage, whereas the herb layer had higher values of the Shannon-Wiener index, Simpson index, and Pielou index than the shrub layer. The variance ratio (VR) of the herb layer was 2.43>1, and the statistical W-test showed a significant positive association among the 20 species in the herb layer. C. forrestii showed a positive association with 13 species and a negative association with 7 species. It was significantly positively associated with Halenia spp. and significantly negatively associated with grasses. These results suggested that the community where C. forrestii is located was stable and rich in endemic species, but there was mutual repulsion between C. forrestii and grasses, which may have a certain negative impact on the grazing ecosystem.

关 键 词：大理白前 群落特征 物种多样性 种间联结性 

分 类 号：Q948.1[生物学—植物学]