摘要
本文将长白山高山冻原87属131种维管植物划分成各种区系地理成分,将长白山高山冻原维管植物区系分别与欧洲、亚洲和北关北极冻原进行了对比分析,提出了在最近一次冰期北极冻原在中国东部南迁到41'T1左右的观点,认为长白山高山冻原植物区系是在第四纪全新世从北极冻原演化而来。
The alpine tundra of the Changbai Mountain is situated in 41°53′- 42°04′N,127°57′-128°11′E,1950(2000)-2749.2m above sea level.There are 87 genera(gen).and 131 species(sp.)of vascular plants in the alpine tundra.Among them,19 gen.belong to Cosmopolitan Distribu- tion Type(DT),58 gen.and 39 sp.to North Temperate DT,4 gen.and 9 sp.to E.Asia and N.America DT,2 gen.and 6 sp.to Old World (Eurasia)Temperate DT,4 gen.and 7 sp.to Temperate Asia DT,and 70 sp.to E.Asia DT,81 gen.and 58 sp.are shared with arctic tundra of Europe,of which,68 gen.and 27 sp.are shared with the arctic tundra of Europe;66 gen.and 51 sp.are shared with the arctic tundra of Asia;and 80 gen.and 42 sp.are shared with the arctic tundra of N. America.The main features of alpine tundra flora are 1)endemic flor- istic elements(17 sp.of vascular plants endemic to alpine tundra)are abundant,2)floristic independence(22 gen.and 70 sp.of vascular plants limited in alpine tundra)is great(strong),3)arctic-alpine flor- istic elements(6 gen.and 43 sp.)are rich.The flora of the alpine tundra in the Changbai Mountain originated from the arctic tundra dur- ing the Holocene of the Quaternary(about 12000 years ago).
出处
《地理科学》
CSSCI
CSCD
北大核心
1990年第4期316-325,共10页
Scientia Geographica Sinica
关键词
区系地理
维管植物
高山冻原
Florogeography
Vascular plants
Alpine tundra
The Changbai Mountain
