广西湿地维管束植物及其区系特征  

Wetland Vascular Plants and Their Floristic Characteristics of Guangxi,China

作　　者：梁士楚[1] 黄安书[1] 李贵玉 刘杰恩 

机构地区：[1]广西师范大学生命科学学院,广西桂林541004 [2]广西林业厅野生动植物和自然保护区管理站,广西南宁53002

出　　处：《广西师范大学学报（自然科学版）》2011年第2期82-87,共6页Journal of Guangxi Normal University:Natural Science Edition

基　　金：广西自然科学基金重点项目(桂科自0991022Z);广西林业厅野生动植物和自然保护区管理站项目

摘　　要：广西湿地维管束植物现已知的有711种,含9个亚种、22个变种和1个变型,隶属120科314属。其中,蕨类植物有15科17属26种;裸子植物有2科4属5种;被子植物有103科293属680种。以莎草科、禾本科、蓼科、荨麻科、玄参科、菊科、水鳖科、天南星科、谷精草科、鸭跖草科、唇形科、毛茛科、伞形科、狸藻科、柳叶菜科等为优势科;以蓼属Polygonum、莎草属Cyperus、飘拂草属Fimbristylis、谷精草属Eriocaulon、荸荠属Eleocharis、狸藻属Utricularia、苔草属Carex等为优势属。广西湿地维管束植物的区系成分复杂,科的分布区有8个类型和5个亚型,属的分布区有12个类型和9个亚型。主要区系特征是:(1)草本植物发达;(2)多型属的种类较多、少型属和单型属的种类较少;(3)以热带成分占优势;(4)特有属、种匮乏。711 species of wetland vascular plants belonging to 314 genera and 120 families （including 9 subspecies, 22 varieties and 1 forms） have been found so far in Guangxi,China. Among them,Pteridophytes had 26 species belonging to 17 genera and 15 families,Gymnospermae 5 species belonging to 4 genera and 2 families,and Angiosperms 680 species belonging to 293 genera and 103 families. The dominant families were Cyperaceae, Gramineae, Polygonaceae, Urticaceae, Scrophulariaceae, Composita, Hydrocharitaceae, Araceae, Eriocaulaceae, Commelinaceae, Labiatae, Ranunculacea, Umbelliferae, Lentibulariaceae and Onagraeeae, and the dominant gena were Polygonum, Cyperus, Fimbristylis, Eriocaulon, Eleocharis,Utricularia,and Carex. The floristic geographical components of the wetland vascular plants of Guangxi were multiform,in which the families could be classified into 8 areal types and 5 subtypes, and the gena classified into 12 areal types and 9 subtypes. The wetland vascular flora had the following features： （1） herbs were well developed; （2）species of polytypic gena were more,while those of monotypic and olygotypic gena were fewer; （3）tropical floristic elements were dominant; （4） both gena and species endemic to China were poor.

关 键 词：湿地 维管束植物 区系特征 广西 

分 类 号：Q948.156[生物学—植物学]