望天鹅风景区钻天柳群落物种组成及多样性研究  

Study on Species Composition and Diversity of the Community of Chosenia arbutifolia in the Swan-watching Scenic Area

作　　者：李成宏 高纯 王梅芳 周波 周梅妹 孙华 苑景淇 兰雪涵 杜凤国[1,3] Li Chenghong;Gao Chun;Wang Meifang;Zhou Bo;Zhou Meimei;Sun Hua;Yuan Jingqi;Lan Xuehan;Du Fengguo(College of Forestry, Beihua University, Jilin 132013, China;Forestry Bureau of Changbai County, Baishan 134400, China;Key Lab. of State Forestry Administration on Conservation and Efficient Utilization of Precious and Rare Forest Resources in Changbai Mountain, Jilin 132013, China)

机构地区：[1]北华大学林学院,吉林吉林132013 [2]长白县林业局,吉林白山134400 [3]长白山特色森林资源保育与高效利用国家林业局重点实验室,吉林吉林132013

出　　处：《中国野生植物资源》2020年第7期51-54,共4页Chinese Wild Plant Resources

基　　金：吉林省2017年省级林木种质资源库建设项目“长白县钻天柳种质资源库”(吉林种﹝2017﹞219号)。

摘　　要：为了解濒危植物钻天柳生存现状,采用典型取样法对望天鹅风景区的钻天柳群落进行了实地调查,分析了群落物种组成及多样性。结果表明:钻天柳群落共有维管束植物28科44属50种,其中有蕨类植物1科1属2种;裸子植物1科2属2种;被子植物26科41属46种。Margalef(马格列夫)丰富度指数和Shannon-Wiener(香农威纳)多样性指数为草本层>乔木层>灌木层;Pielou(皮洛)均匀度指数为乔木层>灌木层>草本层;Simpson(辛普森)优势度指数为乔木层>草本层>灌木层。钻天柳群落中草本层植物种类最多,乔木层和灌木层较为稀少;乔木层植物分布更加均匀,草本层较为聚集,群落物种组成总体较为单一。钻天柳更新困难,属于衰退型种群,建议在就地保护的基础上进一步开展濒危机制的研究。In order to understand the survival status of endangered plant Chosenia arbutifolia,a field investigation on C.arbutifolia community in Swan-watching Scenic Area was carried out using typical samplings method,and the species composition and diversity of the community were analysed.The results showed that there were 28 families,44 genera and 50 species of vascular plant,including 1 family,1 genus and 2 species of ferns.Gymnosperms are 2 species,2 genera and 1 family.Angiosperms are 46 species,41 genera and 26 families.Margalef index and Shannon-Wiener index were herb layer>arbor layer>shrub layer.Pielou index was arbor layer>shrub layer>herb layer.Simpson index was arbor layer>herb layer>shrub layer.The herb layer has the most plant species and the arbor layer and shrub layer are rare.The distribution of plants in the arbor layer was more uniform,and the herb layer was more concentrated.The community species composition is relatively single.It is difficult to renew and belongs to the declining species,so it is suggested to carry out endangered mechanisml research based on the in-situ conservation.

关 键 词：钻天柳 物种组成 多样性指数 濒危植物 望天鹅风景区 

分 类 号：S792[农业科学—林木遗传育种] S759.9[农业科学—林学]