摘要
横断山脉地区是一个十分自然的植物区系地区,其种子植物区系有丰富的科、属、种,地理成分复杂,特有现象和替代现象明显,基本上是温带植物区系性质。根据特有种丰富的程度以及一些自然地理特征,横断山脉地区在区系上可以划分为3个小区:滇西北川西南小区、川西北甘西南青东南小区和藏东至东南小区。从区系成分分析看,横断山脉地区确实是阐明区系发生与板块运动关系,以及包括东亚、北美、欧洲植物区系在内的北温带植物区系起源的一个关键地区。
The region of Hengduan mountain is a very natural region in floristic nature. Its seed plants' flora is abundant in species, genera and families, complex in geographical elements, striking in endemism and vicariance, and basically temperate in nature. According to the degree of abundance in endemic species and some physiographical features, the region can be floristically divided into three subregions: subregion of NW Yunnan and SW Sichuan, subregion of NW Sichuan to SW Gansu and SE Qinghai, as well as subregion of E to SE Xizang. Based on the analysis of its floristic elements, the region is certainly a knot for clarifying the questions about the relationships between the florogenesis and the plate-fectonics, about the origin of the North temperate flora including that of E Asia, N America and Europe.
出处
《云南植物研究》
CSCD
1993年第3期217-231,共15页
Acta Botanica Yunnanica
基金
国家自然科学基金资助项目9390010
关键词
横断山脉地区
种子植物
植物区系
Region of Hengduan moutain
Floristic subregion
Floristic study
Seed plants'flora, North temperate flora
Florogenesis
Plate-tectonics
