【摘要】 青藏高原南部及其毗邻地区沼泽植物区系丰富,有220种,归101属,51科.区系地理成分复杂,热带-亚热带成分占8.33%,热带-温带成分占22.71%,温带成分占43.18%,世界广布成分占9.85%,青藏特有成分占14 39%,北极高山成分占1.51%.更多还原

【Abstract】 The southern part of the Qinghai-Xixang (Tibet) Plateau and its adjacent.area sare rich in flora. There are 51 families, 101 genera and 220 species. The geographical compo-sitions of the flora in this region are very complex,they consist of the following geo-graphical elements; tropic-subtropic elements approximating to 8.33% of the entire flora in the region, tropic-temperate elements 22.71% , temperate elements 43. 18%, Cos-mopolitan elements 9.85% ,Qinghai-Xizang endemic elements 14. 39%,north polemoun-tain elements 1.51%. Temperate elements in this region are dominant. The dominant species of mires,Carex lasiocarpa,in this region is also found in northeast China,Finland and northern Amarica. The origin of mires of this region was earlier than northeast Chi-na and Finland .This shows that the southern part of the Qinghai-Xizang Plateau and adjacent areas may be the centre of origin and distribution of temperate elements更多还原