广西隆安县野生种子植物区系分析  

Flora Analysis of Wild Seed Plants in Long'an County,Guangxi

作　　者：张紫依 黄履山 陈广财 徐凤翠 和太平[1] Zhang Ziyi;Huang Lyushan;Chen Guangcai;Xu Fengcui;He Taiping(College of Forestry,Guangxi University,Nanning,Guangxi 530004,China;Guangxi State-owned Gaofeng Forest Farm,Nanning,Guangxi 530001,China)

机构地区：[1]广西大学林学院,广西南宁530004 [2]广西国有高峰林场,广西南宁530001

出　　处：《广西林业科学》2021年第5期585-593,共9页Guangxi Forestry Science

基　　金：国家自然科学基金项目(31971664);南宁市科学研究与技术开发计划项目(20163147)。

摘　　要：为给隆安县野生种子植物的自然保护和生态保护提供基础数据,并为广西野生植物资源的开发和利用提供科学依据,通过实地调查并结合文献资料,以广西隆安县野生种子植物区系为研究对象,采用主成分分析和聚类分析方法,研究其地理成分特征和区系过渡性质,分析其与7个邻近植物区系的亲缘关系。结果表明,隆安县野生种子植物物种丰富,有171科756属1497种。裸子植物4科4属5种,被子植物167科752属1492种(双子叶植物141科606属1218种,单子叶植物26科146属274种)。科属分布区类型多元,热带成分的比重高于温带成分。R/T值计算结果表明,区系有强烈的热带性质。主成分分析和聚类分析显示,该区系与广西下雷自然保护区和广西宾阳县的亲缘关系最近,与贵州省云台山的亲缘关系较远。In order to provide basic data for natural protection and ecological protection of wild seed plants in Long'an county,Guangxi,and provide scientific basic for exploitation and utilization of wild plant resources in Guangxi,based on field investigation and reference materials,taking flora of wild seed plants in Long'an as ob⁃ject,characteristics of geographic element and transitional character of flora were studied by principal compo⁃nent analysis and cluster analysis,and geographical relationships with seven adjacent areas were analyzed.Re⁃sults showed that wild seed plants in Long'an were abundant.There were 1497 species belonging to 756 genera and 171 families.There were 5 species gymnosperms belonging to 4 genera and 4 families;1492 species angio⁃sperms belonging to 752 genera and 167 families,including 1218 species dicotyledons belonging to 606 genera and 141 families,and 274 species dicotyledons belong to 146 genera and 26 families.Flora distributions of fam⁃ily and genus were multicomponent.Proportions of tropical elements were greater than those of temperate ele⁃ments.R/T value showed that flora of Long'an had obvious tropical nature.Results of principal component anal⁃ysis and cluster analysis showed that the closest geographical relationships with Long'an were Xialei Nature Re⁃serve and Binyang county in Guangxi,and distant relationship was Yuntai Mountain in Guizhou.

关 键 词：植物区系 主成分分析 聚类分析 种子植物 区系地理成分 

分 类 号：Q948.5[生物学—植物学]