南岭植物区系地理学研究──Ⅰ．植物区系的组成和特点

THE FLORISTIC GEOGRAPHY OF NANLING MOUNTAIN RANGE, CHINA──I. FLORISTIC COMPOSITION AND CHARACTERISTICS

摘要:

南岭山地地质历史较为古老．自然环境复杂多样，孕育了比较丰富的植物资源，计有维管束植物３８３１种．隶属１１８４属．２４８科．蕨类植物以亚热带及亚热带至热带分布科属为主，起源古老；裸子植物多数为原始古老的子遗成分；被子植物大多数科属的分布中心都在中国或华夏的亚热带及其附近热带地区．研究表明．南岭山地植物区系是典型的亚热带植物区系，具有由热带性区系成分向温带性区系成分过渡的特点；亚洲热带、温带和亚热带植物区系成分在发生上是统一的；北美植物区系和华夏植物区系有着共同的起源，是在联合古陆漂离之前通过欧洲一北美古陆发展过去的．

Abstract:

The Naning Mountain Range, with the location of 24°30' to 26°30'N and 109°to 116° E and covering an area of c. 45000 km2, is situated in the region of boundaries among Fujian, Jiangxi, Guangdong, Hunan, Guangxi and Guizhou Provinces. It is an important dividing zone of natural geography in China and enjoys a relatively rich flora of vascular plants, including 248 families, 1184 genera, 3831 species, 14 subepecies, 348 varieties and 14 forms. The study indicates that the Naming Mountain Range has a typical subtropical flora and is characteristic of floristic transition from tropical to temperate composition. The flora, which possesses lots of relic, archaic, primitive and endemic elements of the Cathaysian flora, must be indigenous to the South China platform. The floras of tropical, subtropical and even temperate Asia might have a common origin as an integrity. The North America might have common floristic origin with the Cathaysia before its complete separation from Europe.