东亚粗叶木属(茜草科)植物的分布及其生物地理意义  

Distribution Patterns of Lasianthus (Rubiaceae) Species from Eastern Asia and Their Biogeographical Implications

作　　者：朱华[1] 

机构地区：[1]中国科学院西双版纳热带植物园,云南昆明650223

出　　处：《云南植物研究》2008年第3期308-314,共7页Acta Botanica Yunnanica

基　　金：国家自然科学基金项目(30770158)

摘　　要：茜草科粗叶木属植物是亚洲热带原始林下优势地位明显的一类灌木植物。依据标本资料和分类学修订,研究了东亚产粗叶木属植物33个种的地理分布式样,并将其划分为热带亚洲、东亚和中国特有3个分布区类型,其中热带亚洲分布型可以进一步划分为印度(喜马拉雅)至马来西亚分布、印度(喜马拉雅)至中国南部和大陆东南亚分布及中国南部至大陆东南亚分布3个亚型。中国粗叶木属植物中热带亚洲分布型占总种数的72·7%,显示了中国热带地区植物区系的热带亚洲亲缘。一些粗叶木属植物种类的分布式样暗示了中国-日本、中国-喜马拉雅森林植物区系的分区及物种形成,喜马拉雅(横断山)-台湾山地植物区系的联系及台湾-琉球-日本物种迁移通道。海南、台湾植物区系缺少特有种反映了它们的植物区系大陆性很强。粗叶木属植物种类的分布式样对中国热带植物种分布区类型的划分提供了参考。Distribution patterns of Las/anthus species （Rubiaceae） from East Asia were studied, based on a revision work on the genus and database of collections. Three distribution types of species were recognized as tropical Asian, East Asian and Endemic to China. The type of tropical Asian distribution was further divided into three subtypes as India （Himalayas） to Malesia, India （Himalayas） to Southern China and mainland SE Asia, and Southern China to mainland SE Asia. The species of tropical Asia distribution contribute to 72.7% of the total species, by which the tropical Asian attinity of the flora of southern China is supported. Distributions of some Las/anthus species are well corresponded to the flofistic regionalization of Sino-Himalayas and Sino-Japan of East Asian flora, while some distribution patterns indicate a bingeographical connection between Himalayas and Taiwan and a migration pass between Taiwan island and mainland Japan through Ryukyu Islands. The flofistic affinities among Chinese continent, Hainan and Taiwan are also supported by Las/anthus species in the study.

关 键 词：茜草科 粗叶木属 种分布式样 生物地理意义 

分 类 号：Q948[生物学—植物学]