亚热带植物科学2023，Vol.52Issue(5)：424-432,9.DOI:10.3969/j.issn.1009-7791.2023.05.008
广西桉树人工林的植物物种组成与区系特征研究
Species Composition and Floristic Characteristics of Eucalyptus spp.Plantations in Guangxi,South China
摘要
Abstract
Through integrating field surveys and literature data,this study analyzed the species composition and floristic characteristics of vascular plants in Eucalyptus plantation in Guangxi.The results showed that there were 584 species from 369 genera and 120 families of vascular plants in the Eucalyptus plantation of Guangxi.Among them,ferns consisted of 49 species from 28 genera and 15 families,gymnosperms included 6 species from 4 genera and 4 families,and angiosperms comprised 529 species from 337 genera and 101 families.These values account for 38.83%,18.35%,and 6.37%of the total number of vascular plant families,genera,and species in Guangxi,respectively,indicating relatively low plant diversity in Eucalyptus plantation.Shrubs(201 species)dominated the vegetation,while lianas(91 species)were the least represented.At the family and genus level,this flora was dominated by plurimotypic families,mesotypic family,oligotypic genera and monotypic genera.The vascular plant genera and species tended to be concentrated in plurimotypic families,oligotypic genera and monotypic genera,indicating that the flora had a certain differentiation potential and the composition of families and genera was relatively scattered.The abundant primitive taxa of dominant families,genera,and species indicate that the floristic components had a certain degree of antiquity.There were a total of 14 distribution types and 15 subtypes in the genus distribution area.The ratio of tropical to temperate genera(R/T value)was 5.37,with tropical components being the main component,with pan tropical components being the most dominant.Only 2 genera and 2 species were endemic to China in the flora.Overall,the flora of Eucalyptus plantation in Guangxi exhibited complex composition,apparent tropical characteristics,ancient origins,but lacked unique elements,and had relatively low differentiation.These research findings could be utilized to guide the analysis of plant diversity and floristic characteristics in Eucalyptus plantation in Guangxi.关键词
桉树人工林/物种组成/生活型/植物区系/广西Key words
Eucalyptus plantation/species composition/life form/flora/Guangxi分类
农业科技引用本文复制引用
霍春霖,张忠华,胡聪,徐超昊,胡刚..广西桉树人工林的植物物种组成与区系特征研究[J].亚热带植物科学,2023,52(5):424-432,9.基金项目
广西自然科学基金项目(2021GXNSFFA196005、2021GXNSFAA196024) （2021GXNSFFA196005、2021GXNSFAA196024）
南宁桉树森林生态系统广西野外科学观测研究站科研能力建设项目资助(桂科23-026-272) （桂科23-026-272）
南宁桉树森林生态系统广西野外科学观测研究站开放课题(NES-2023KF02) （NES-2023KF02）
