横断山区与台湾苔藓植物的热带亲缘

本文系首次探讨横断山区和台湾苔藓植物的热带亲缘关系。除较习见的一些热带苔类和藓类的科在两地区均分布外 ,近年来 ,又发现多达 14科、17属和 18种苔藓植物在中国仅见于台湾和横断山区 ,其中 13种为典型亚洲热带分布类型。分析表明这种现象的呈现有多种情况 ,而可能系原分布于两地区间的一些热带苔藓植物消失所致。同时表明 ,虽台湾海峡在第三纪后下沉已使台湾与亚洲大陆分离 ,但由于过去长期相互连接 ,台湾岛上的苔藓植物尚未产生根本性变异 ,上述热带亲缘关系也正证实了这点 ,台湾仍然是一个大陆型岛屿

Relationship of the tropical elements of the bryophytes between Hengduan Mts, Southwest China and Taiwan province, Southeast China

This is the first paper concerning the topic of the relationship of the tropical bryological elements between Hengduan Mts and Taiwan province. Except the common large tropical families of liverworts and mosses, 18 species of the bryophytes belonging to 14 families, 17 genera of bryophytes, in which 13 species are the classical tropical Asian ones, were found only in Hengduan Mts and Taiwan province in China. This phenomenon shows that it is mainly caused by the disappearance of the tropical bryophytes in the vast regions between Hengduan Mts and Taiwan province. As well, Taiwan Island isolated from mainland Asia due to the Taiwan Strait submerged after Tertiary, however the bryoflora of Taiwan is not changed seriously following their long geohistorical connection. The above tropical elements of the bryophytes in Hengduan Mts and Taiwan Island may prove this point of view, that Taiwan is still a continental island.