植物研究2025，Vol.45Issue(5)：707-721,15.DOI:10.7525/j.issn.1673-5102.2025.05.006
德夯地质公园岩溶河谷源头瀑布草本群落植物多样性
Herbaceous Plant Diversity in the Karst River Valley Headwater Waterfalls of Dehang Geopark
摘要
Abstract
To explore the species composition,floristic geographical components,and diversity characteristics and patterns of change in the herbaceous communities of waterfalls in Dehang Geological Park,three herbaceous communities of waterfalls were used as materials,and the importance values,floristic geographical components,species α and β diversity,nutritional traits,reproductive traits,and phylogenetic diversity were analyzed respectively,and the basic data of plant diversity in waterfall habitats was provided.The results indicated that a total of 85 species from 66 genera and 35 families of herbaceous plants were identified,and Aster ageratoides,Strobilanthes oligantha,Pilea notata and Pilea sinofasciata were the dominant species.The geographical distribution types were consistent with the floristic characteristics of the East Asia,with more tropical components in Dalongdong and a less proportion in Xiannvtan.In terms of alpha diversity,Shannon-Wiener and Simpson indices of plants in Dalongdong were higher,but the Pielou index was the lowest;beta diversity indices were consistent,with the highest value occurred between Dalongdong and Liusha Waterfall,and the lowest value occurred between Liusha and Xiannvtan Waterfall.The life habits were predominated by perennial herbs,with medium-sized,simple,papery,unlobed,and serrated leaves.There were differences in leaf arrangement and pubescence;reproductive traits were mainly characterized by bisexual flowers,terminal and axillary,dry fruits,and wind-dispersed seeds,with flowering periods concentrated from May to August and fruiting periods from August to October,and differences in inflorescence type.The herbaceous communities exhibited a clumped distribution,with environmental filtration being as a primary factor influencing community structure.The herbaceous community in the Dehang waterfalls exhibited unique diversity characteristics compared to the other communities.关键词
瀑布/草本植物/植物多样性/区系地理成分/德夯/湘西世界地质公园Key words
waterfalls/herbaceous plants/plant diversity/floristic geographic components/Dehang/Xiangxi Global Geopark分类
农业科技引用本文复制引用
龙姿羽,王志成,赵蕊,刘冰,陈功锡..德夯地质公园岩溶河谷源头瀑布草本群落植物多样性[J].植物研究,2025,45(5):707-721,15.基金项目
吉首市德夯风景区管理处科研项目(19DHK03). （19DHK03）
