丹霞地貌石松类和蕨类植物区系比较研究  

Comparative study of lycophytes and ferns on Danxia landform

作　　者：梁胜 王梦楠 韦宝婧 胡希军 陈存友 LIANG Sheng;WANG Mengnan;WEI Baojing;HU Xijun;CHEN Cunyou(College of Landscape Architecture,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]中南林业科技大学风景园林学院,长沙410004

出　　处：《生态科学》2022年第2期166-173,共8页Ecological Science

基　　金：国家林业局野生植物保护项目(2016ZWZY06);林业公益性行业科研专项(201404710);湖南省高等学校“双一流”建设项目(湘教通〔2018〕469号)。

摘　　要：在野外调查及资料收集的基础上,对福建、广东两省中4个纬度相近区域的石松类和蕨类植物区系基本组成、地理成分、区系相似性等进行分析,比较丹霞地貌与非丹霞地貌石松类和蕨类植物区系特征差异。结果显示:(1)研究区有石松类和蕨类植物38科80属206种,其中丹霞山35科65属134种,冠豸山31科51属103种,观音岽31科57属103种,南雄丹霞梧桐31科57属96种,优势科明显但属种分化程度不高。(2)在区系丰富性上,非丹霞地貌区丰富性较高于丹霞地貌区,具体表现为丹霞山(0.74)>观音岽(无丹霞地貌)(0.14)>南雄丹霞梧桐(0.07)>冠豸山(0.02)。(3)在区系地理成分上,科属水平均以热带成分为主(占84%以上),与热带亲缘程度较高;在种水平上,热带成分占比均为59%以上,呈热带向温带过渡特征。(4)在地理亲缘关系上,南雄丹霞梧桐(丹霞地貌)与观音岽(非丹霞)亲缘关系明显,科、属、种水平上相似性分别为0.88、0.97、0.8,两者同质性明显。该结果为探讨丹霞地貌地带石松类和蕨类植物植物的起源和发育提供重要依据,对丹霞地貌的植物资源合理开发利用具有参考意义。Based on field work and collecting literature,we investigated the basic composition,floristic composition and correlation of lycophytes and ferns in similarly latitude Danxia Landform areas of Fujian and Guangdong Province,as well as compared the differences between Danxia landform and Non-Danxia landform.Our results are as follows.(1)The are totally 206 species,belonging to 38 families and 80 genera,with 134 species belonging to 35 genera and 65 families in Danxia Mountain,103 species belonging to 31 genera and 51 families in Guanzhai Mountain,103 species belonging to 31 genera and 57 families in Guanyin Dong,and 96 species belonging to 31 genera and 57 families in Nanxiong Danxia Wutong.The pteridophytes in the study area have ancient origins and continuous evolutionary relationships,and the predominant families are obvious but the genus is not highly differentiated.(2)On floristic richness,the Non-Danxia landform area has a higher richness than the Danxia Landform area,which is shown as Danxia Mountain(0.74)>Guanyin Dong(Non-Danxia landform)(0.14)>Nanxiong Danxia Wutong(0.07)>Guanzhai Mountain(0.02).(3)On floristic geographical components,the genus level is dominated by tropical components(accounting for more than 84%),with a high degree of kinship with the tropics.At the species level,the tropical components accounted for more than 59%,showing a transition from tropical to temperate characteristics.(4)On geographical relatedness,Nanxiong Danxia Wutong(with Danxia landform)and Guanyin Dong(with Non-Danxia landform)have obvious relatedness.The similarity of family,genus and species is 0.88,0.97 and 0.8 respectively,indicating that Danxia landform has limited influence on the fern flora.The results provide an important basis for studying the origin and development of lycophytes and ferns in Danxia landform and provide a reference for the rational development and utilization of plant resources in Danxia landform.

关 键 词：丹霞地貌 石松类和蕨类植物 区系组成 相关性分析 

分 类 号：S157.2[农业科学—土壤学]