黄土高原菊科植物区系初步研究

Preliminary Study on the Compositae Flora in the Loess Plateau

对黄土高原区菊科植物区系的组成、分类及其特点进行了研究。结果表明:黄土高原菊科植物有2亚科10族120属432种1亚种。植物种类丰富,优势属较为明显。菊科植物属的地理成分以温带区系成分占有绝对优势,区系成分复杂,起源古老,与周边地区广泛联系。中国特有分布种有167种,占种总数的38.66%。

The study on the species composition, taxonomies and characters of the family Compositae in the Loess Plateau indicated that, the Compositae in this flora consists of I subspecies, 432 species, 120 genera, 10 tribes and 2 subfamilies ,rich in species, the dominant genera seemed relatively prominent. The geographic elements of Compositae flora in Loess Plateau is absoluted dominant in the temperate, complex in geographical element, having an extensive connection with nearby floristic areas and ancient in origin. 167 genera in Loess Plateau are endemic to china, accounting for 38. 66%.