从华夏植物区系理论再论河西走廊植物区系  

The vegetation flora in Hexi corridor based on Cathaysia flora view

作　　者：沈禹颖[1] 

机构地区：[1]甘肃省草原生态研究所

出　　处：《草业科学》2001年第2期1-3,7,共4页Pratacultural Science

基　　金：国家自然科学基金! (396 30 2 5 0 );甘肃省科委"九五"攻关项目! GK971- 2 - 34A资助

摘　　要：传统的区系观点认为河西走廊 ,包括整个西北荒漠、半荒漠区植物区系的各成分起源古老 ,其中地中海 -西亚 -中亚成分占较重要的地位 ,以中亚成分更为重要。但华夏植物区系的理论认为我国西北属古陆块的一部分 ,西北地区的植物是同华夏植物区系一起发展起来的 ,是因环境的变化而产生的次生成分 ,不宜分划入中亚植物区。The components of desert and semi desert flora in northwest region of China have ancient origination, in which the Mediterranean west Asia central Asia components are major parts, especially for central Asia component, based on traditional flora classification system. But the fossil evidence has shown that northwest China belongs to ancient land, the vegetation of that developed from Cathaysia flora, which is a secondary components caused by environment change. It is concluded that the vegetation flora in northwest may be not suitable to be classified as central Asia component.

关 键 词：华夏植物区系 河西走廊 荒漠 半荒漠区 植物区系划分 

分 类 号：Q948.54[生物学—植物学]