摘要
苔藓植物具固土、保水、增肥的功能,可作为南方离子型稀土矿区生态修复的新型材料。调查了赣南离子型稀土矿区的苔藓植物资源,分析了苔藓植物的区系和生活型组成,筛选适于矿区生态修复的类群。共鉴定稀土矿区苔藓植物36科67属118种。苔藓植物区系成分以东亚分布(28.97%)、北温带分布(26.17%)、中国特有分布(14.95%)和热带亚洲分布(14.02%)为主;矮丛集型是矿区最优势(29.7%)的生活型。以包括赣南稀土矿区在内的4个金属矿区和4个林区为对象,分别对其苔藓植物区系和生活型谱系数据进行主成份分析(PCA),结果显示:4个林区的位点均相对汇集,而4个金属矿区的位点均相对离散,体现金属矿区间更强的环境异质性;矮丛集型和开放丛集型苔藓植物是各金属矿区共有的优势类群,它们更耐干旱,适合用于金属矿区的生态修复。
With the ecological functions of soil fixation,water retention,and fertilizer enrichment,bryophytes can be used as new material for ecological restoration on the ionized rare earth mining in south China.Bryophyte resources were investigated in the ionized rare earth mining area of southern Jiangxi province.Based on the floristic and life form of bryophyte composition analysis,the suitable groups are selected for ecological restoration.A total of 118 species belonging to 36 families and 67 genera are identified.East Asian(28.97%),North Temperate(26.17%),Endemic to China(14.95%),and Trop Asia(14.02%)are the major elements in bryoflora.The short turfs was the most dominant(29.7%)life form in the mining area.Data of floristic and life form composition from 4 forest and 3 metal mining areas are collated besides ionic rare earth mines of southern Jiangxi,and two principal component analysis(PCA)on flora and life form respectively produce similar results.In the two PCA,the four forests area loci are all clustered together,while the four metal mining area loci are all discrete.It reflects the relatively stronger environmental heterogeneity among the metal mining areas.Short turfs and open turfs species are dominant groups which can adapt to drought and are suitable for ecological restoration in metal mining areas.
作者
李斌
蔡奇英
刘以珍
管毕财
吴兰
葛刚
LI Bin;CAI Qiying;LIU Yizhen;Guan Bicai;Wu Lan;GE Gang(Department of Ecology,College of Life Sciences,Nanchang University,Nanchang 330031,China)
出处
《南昌大学学报（理科版）》
CAS
北大核心
2021年第1期63-70,共8页
Journal of Nanchang University(Natural Science)
基金
国家自然科学基金资助项目(41761103)
国家重点研发计划项目(2019YFC0605005)
江西省自然科学基金资助项目(20151BAB204012)。
关键词
苔藓植物
区系
生活型
赣南稀土矿区
Bryophta
flora
life-form
ionic rare earth mines
southern Jiangxi
