甘肃兴隆山国家级自然保护区的蕨类植物区系  

Fern flora in Gansu Xinglong Mountain national nature reserve

作　　者：田晓娟 张珊 陶继新 安谈红 赵瑞桃 张红勇 单立山[1] TIAN Xiaojuan;ZHANG Shan;TAO Jixin;AN Tanhong;ZHAO Ruitao;ZHANG Hongyong;SHAN Lishan(College of Forestry,Gansu Agricultural University,Lanzhou 730070,China;Gansu Xinglongshan National Nature Reserve Management Center,Lanzhou 730117,China)

机构地区：[1]甘肃农业大学林学院,甘肃兰州730070 [2]甘肃兴隆山国家级自然保护区管护中心,甘肃兰州730117

出　　处：《甘肃农业大学学报》2022年第5期164-170,180,共8页Journal of Gansu Agricultural University

基　　金：甘肃省林业和草原局2021年自列省级林业和草原科技项目(2021kj067)。

摘　　要：【目的】通过对甘肃兴隆山自然保护区蕨类植物区系组成、地理成分及与相近地区相似性系数的分析,为该区森林的形成和演变、蕨类植物的保护利用等提供理论依据,以期丰富西北地区蕨类植物区系研究。【方法】依据2020年8月至2021年9月野外线路调查数据以及相关文献资料,运用野外植物调查样方法,对甘肃兴隆山国家级自然保护区蕨类植物的蕨类植物进行区系组成和分布区类型的分析,采用Czeha-nows-ki系数将其与周边地区植物区系相似度进行比较。【结果】兴隆山自然保护区蕨类植物12科19属29种,蹄盖科为优势科,铁角属为优势属,有比较原始的卷柏科、木贼科等类群,及鳞毛蕨科、水龙骨科等较先进的类群,也有介于两者之间的蹄盖蕨科、铁线蕨科、中国蕨科等类群,但分化程度不高,单种和寡种科属居多;该区蕨类植物科级水平上以热带性质为主(71.43%),属、种级水平上均以温带性质为主,分别占62.5%、96.55%,呈现出热带向温带渗透和过渡的性质,以北温带分布占主导地位;与其他5地区相比较的亲疏关系依次为:太统-崆峒山>太白山>陕西牛背梁>白水江>秦岭,与太统-崆峒山科、属、种级水平上最为亲密,相似度分别为91.67%、71.43%、53.33%,与两地区现代自然条件相似的事实相吻合。【结论】该区蕨类植物丰富度较低,分化程度不高,历史起源古老,进化关系连贯,与太统-崆峒山有着紧密的历史联系,为兴隆山自然保护区的形成和演变提供了参考依据。【Objective】In order to provide theoretical basis for the formation and evolution of forest and the protection and utilization of fern in Xinglongshan Nature Reserve,Gansu Province,and to enrich the study of fern flora in Northwest China.,and to analyze the floristic composition,geographical composition and similarity coefficient with similar areas of fern.【Method】Based on the field route survey data and relevant literature from August 2020 to September 2021,the floristic composition and distribution types of fern in Xinglongshan National Nature Reserve,Gansu Province are analyzed by using the field plant survey sample method,and the similarity between them and the flora in the surrounding areas is compared by using Czeha-nows-ki coefficient.【Result】A total of 29 species of ferns belongs to 19 genera and 12 families in the Nature Reserve,of which Athyriaceae is the dominant family,and Asplenium is the dominant genus.There are relatively primitive groups such as Selaginellae and Equisetaceae,more advanced groups such as Dryopteridae and Polypodiaceae,as well as groups such as Athyriaceae,Adiantaceae and Sinopteridaceae,but the degree of differentiation is not high,and most families and genera are single species and few species.The ferns in this area are mainly tropical at the family level(71.43%),and temperate at the genus and species level,accounting for 62.5%and 96.55%respectively,showing the nature of infiltration and transition from tropical to temperate.The northern temperate zone is dominant.Compared with the other 5 regions,the close relationship is as follows:Taitong-Kongtong Mountain>Taibai Mountain>Shaanxi Niubeiliang>Baishuijiang>Qinling,which is the closest to Taitong-Kongtong Mountain at the family,genus,and species level.The similarity is 91.67%,71.43%,53.33%,which is consistent with the fact that the modern natural conditions of the two regions are similar.【Conclusion】The fern in this area have low richness,low degree of differentiation,ancient historical origin and coherent evolution

关 键 词：蕨类植物 调查 区系分析 兴隆山自然保护区 

分 类 号：S948.5[农业科学—水产养殖]