广西科学院学报2025，Vol.41Issue(3)：288-298,11.DOI:10.13657/j.cnki.gxkxyxb.20251017.001
广西特有植物物种多样性调查和区系特征分析
Survey on Species Diversity and Floristic Characteristics Analysis of Guangxi Endemic Plants
摘要
Abstract
Guangxi lies on the southern border of China,which is located in the transition zone of tropical and subtropical flora.It is an important concentration area of endemic plants in China.Based on the Checklist of Endemic Plants of Guangxi,the species composition,family and genus structure,life form spectrum,floristic geographical composition and spatial distribution pattern of endemic plants in Guangxi were systematically analyzed in this study.The results showed that there were 1 133 species of endemic plants,belonging to 116 families and 339 genera,which were rich in species but concentrated in lineages.The life-form spectrum was dominated by perennial herbs(719 species,accounting for 63.5％of the total species),followed by shrubs(270 species,accounting for 23.8％of the total species),vines and epiphytes(84 species,accounting for 7.4％of the total species).This composition pattern reflected the carrying effect of complex topography and various microhabitats in Guangxi.The floristic-geographical composition showed that there were 209 genera(61.65％)of tropical distribution groups and 72 genera(21.24％)of temperate distribution groups,with R/T value of 2.90,showing obvious tropical advantages and typical transitional characteristics.In terms of spa-tial distribution,karst peak clusters and mountain forest belts such as Baise,Chongzuo,Hechi and Guilin were the main enrichment areas of endemic plants,reflecting the driving effect of limestone microtopography and complex habitats on the formation and local evolution of endemic plants.In the micro-distribution groups of endemic plants,a considerable part had not yet been included in the existing protection system,and there were obvious protection gaps.Therefore,it is urgent to carry out accurate identification and dynamic assess-ment of plants at the microhabitat scale and improve the ecological protection network,so as to provide scien-tific support for the protection and sustainable utilization of endemic plant diversity in Guangxi.关键词
广西/特有植物/植物多样性/区系分析/R/T值/喀斯特微生境/物种富集区/保护空缺Key words
Guangxi/endemic plants/plant diversity/floristic analysis/R/T value/karst microhabitats/species-rich areas/protection gaps分类
生物学引用本文复制引用
覃俏梅,丰硕,邹蓉,蒋运生,吴林芳,盘波,杨丽华,唐健民,韦霄..广西特有植物物种多样性调查和区系特征分析[J].广西科学院学报,2025,41(3):288-298,11.基金项目
国家自然科学基金项目(32160091,32060248),国家重点研发计划课题(2022YFF1300703),广西自然科学基金项目(2020GXNSFAA259029),中国科学院"西部之光"计划项目(2022),广西林业科技推广示范项目(2023LYKJ03,桂林科字[2022]第23号),广西植物功能物质与资源持续利用重点实验室自主项目(ZRJJ2022-2,ZRJJ2024-3),河池市科技基础与人才项目(河科AC231113)资助. （32160091,32060248）
