云南哀牢山地区种子植物区系研究

The Studies on Floristics of Seed Plants in Ailaoshan Region, Yunnan, China

摘要:

依据采集的4 000余份标本及馆藏标本的整理和鉴定，云南哀牢山地区有野生种子植物199科945属2 238种215变种(亚种)。植物种类十分丰富，是云南植物多样性最为丰富的地区之一。种子植物区系总体上是亚热带性质, 其热带科占70.47%，热带属占63.89%，热带成分虽多于温带成份，但相当数量温带成分的存在反映了该区系具有从热带向温带的过渡性质。该植物区系缺少典型热带成分，但具有不少东亚特征科属。因此，该植物区系在区划上仍属于东亚区中国-喜马拉雅植物亚区，云南高原地区，属于东亚植物区系的一部分。

Abstract:

Ailaoshan Nature Reserve is located in the centre Yunnan Plataeu (23°36′～24°56′N，100°44′～101°30′E) with area about 677 km2 and altitude from 422 to 3 165.9 m, and involve three prefectures and six counties of Yunnan Province. On the basis of more than 4 000 seed plants specimens collected at the core area of Ailaoshan Nature Reserve and other regions nearby and 10 000 information obtained from the main herbaria of China, the floristic characteristics of seed plants of Ailaoshan Nature Reserve were studied. There were 2 453 native species (including subspecies) of seed plants belonging to 199 families and 945 genera in Ailaoshan region. The flora was Subtropical in nature basically with transition from Tropical Asia to Temperate East Asia. At family level, 105 families, accounted for 70.47% of the total families were Tropical distribution. At generic level, Tropical elements contributed to 63.89% of the total flora. The flora was lack of typical Tropical elements, but had many East Asiatic families and genera. The flora belongs to the Yunnan Plateau Region of Sino-Himalayan Subkingdom, East Asiatic Kingdom in floristic regionalization.