应用除趋势对应分析探讨香茶菜属植物在中国的分布式样  

Application of DCA to study distributive patterns of Isodon in China

作　　者：郭水良[1] 曹同[2] 

机构地区：[1]浙江师范大学生命与环境科学学院,浙江金华321004 [2]上海师范大学生命与环境科学学院,上海200234

出　　处：《浙江大学学报（农业与生命科学版）》2004年第1期1-9,共9页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：浙江省自然科学基金资助项目(301028).

摘　　要：应用除趋势对应分析(DedentredCorrespondenceAnalysis,DCA)对我国境内的香茶菜属(Isodon)植物分布式样的定量分析表明,中国香茶菜属植物可以分为西南区、华南区和华东-华中区、北方区,西南区中的滇西北、川西、藏东南是我国香茶菜属植物的多样化中心.地理成分分析表明,中国香茶菜属植物以中国特有成分为主,其次为东亚成分,热带亚洲成分仅3种,分别占我国属该植物总种数的78.2%、18.4%和3.4%.表明除趋势对应分析比主成分分析(PrincipalComponentAnalysis,PCA)更能够直观地表达不同地区植物区系的相似关系.The distributive patterns of Chinese Isodon were studied by Detrended Correspondence analysis (DCA). The results are as follows: ①The geographic distribution of Chinese Isodon could be divided into four regions including Southwestern China area, Southern China area, Eastern-Central China area and Northern China area; ②The area including Northwestern Yunnan, West Sichuan and Southeastern Xizhang is the diversity center of the Chinese Isodon; ③The geographic elements of Chinese Isodon include the element endemic to China, Eastern Asian element and Tropical Asian element, (accounting) for 78.2%, 18.4% and 3.4% of the total species of the genera in China respectively; (④DCA) is more applicable than PCA (Principal Component Analysis) in florology and phytogeography.

关 键 词：香茶菜属 分布式样 除趋势对应分析 植物区系 唇形科 

分 类 号：Q949.777.6[生物学—植物学]