Abstract: The Sanqingshan Mt.locates in the east of Huaiyu Range in Jiangxi Province which situates between 28°52'~28°57'N latitude and 118°00'~118°06'E longitude.There are abundant resources of Orchidaceae including 30 species of 21 genera in Sanqingshan,which account for genera 56.76% and species 38.46% of Orchidaceae in Jiangxi Province,and 12.28% and 2.41% in China respectively.The Orchidaceae flora owns the features that the main life form is ground-living orchid,the main areal types is temperate class,and floristic elements scatter and lack endemic species.The comparison of Orchidaceae flora generic Areal types and comparability among Huangshan Mt.,Wuyishan Mt.,Tianmushan Mt.,Jinggangshan Mt.,Lushan Mt.and Sanqingshan Mt.are analyzed,and the conclusions are as follows:the generic comparability coefficient is higher than species,and the contact of flora among 6 Mt.is tight;North temperate is primary generic areal type in Lushan,Tianmushan,Huangshan and Sanqingshan;Tropical Asia to Tropical Oceania is primary generic areal type in Jinggangshan and Wuyishan;East Asia and Endemic to China is primary species areal type in 6 Mt..According to the ecotypes,Terrestrial orchid is primary and Epiphytic orchid secondary.There are only two ecotypes in Sanqingshan and Huangshan,but all ecotypes appear in Wuyishan,Tianmushan,Jinggangshan and Lushan.Base on China Species Red List,all endangered plants in 6 Mt.are concluded at last.

Key words: Orchidaceae, flora, comparative analysis, Sanqingshan Mt., Jiangxi Province

摘要： 江西省三清山兰科植物资源丰富,约21属30种,占江西省兰科植物属种的56.76%、38.46%,占中国兰科植物属种的12.28%、2.41%。区内兰科植物生活型以地生兰为主;分布区式样以温带型为主;区系成分分散,缺乏本地特有成分。与各山地的相似性以及属种分布型比较显示,三清山与5山地在属级水平上相似性系数高,兰科植物区系联系比较紧密,从属分布区类型看,三清山、黄山、天目山和庐山以北温带分布为主,井冈山和武夷山以热带亚洲-热带大洋洲为主;在种级水平上相似性系数较低,种分布区类型均以东亚和中国特有分布为主。按生态型划分,地生兰为主,附生兰为辅,三清山和黄山只有两生态类型,武夷山、天目山、井冈山和庐山生态类型齐全。最后,依据"中国物种红色名录"对各山地珍稀濒危保护物种进行归纳统计。

关键词: 兰科植物, 区系, 比较分析, 三清山, 江西