川西蕨类植物区系特征及其与国内其他地区的地理联系  

Research on Floristic Characteristics and Geographic Contact of Pteridophytes in Ganzi and Liangshan Prefectures in Western Sichuan

作　　者：何飞[1,2] 陈俊华[2] 刘兴良[2] 刘世荣[1] 何亚平[2] 蔡小虎[2] 隆廷伦 马钦彦[4] 

机构地区：[1]中国林业科学研究院,北京100091 [2]四川省林业科学研究院,四川成都610081 [3]四川林业持续发展项目管理办公室,四川成都610081 [4]北京林业大学,北京100083

出　　处：《四川林业科技》2010年第4期34-40,共7页Journal of Sichuan Forestry Science and Technology

基　　金：中国林业持续发展项目“四川西部生物多样性调查与评价”(TF050644-CHA);“十一五”科技支撑项目“西南山区退化天然林恢复与经营技术试验示范”(2006BAD03A10)的部分内容

摘　　要：四川西部甘孜和凉山地区蕨类植物共有46科101属453种,种类繁多,特有成分丰富,优势科明显,大部分科内属、种贫乏;区系成分复杂,新老兼备;区系具有交叉、过渡性;区系性质在不同分类等级上存在差异。地理成分相关性分析和主成分分析一致表明川西蕨类植物区系地理成分具有热带向温带性质的过渡特性,略接近我国南方蕨类植物区系性质。There are 453 species of ferns belonging to 101 genera and 46 families in Ganzi and Liangshan Prefectures of Western Sichuan,the quantity of spcies is very large,the endemic components are rich,a few families have a large number of genera and species,but in many families are only found rare genera and rare species.The elements of pteridophytic flora are very complicated with new ingredients and old ones.The flora has the features of the crossing and transition.The features of fern floristics display difference in different taxonomy ranks.In addition,the results of correlation analysis of floristic elements are coincident with principal component analysis and some conclusions are made as follows.The floristic ingredients of pteridophytes in Western Sichuan have transitional characteristics from the tropic feature to the temperate one,which are slightly close to the floristic feature of ferns in Southern China.

关 键 词：蕨类植物 区系特征 地理联系 四川西部 

分 类 号：Q948.5[生物学—植物学]