甘肃草本植物区系的一条分界线

A possible boundary line of the hebaceous plant flora in Gansu province

对甘肃产 5科 1 61属 531种草本植物 (不包括栽培属种 )进行了鉴定和登记 ,且对它们进行了统计分析和区系地理研究。从种数与纬度的关系图中得出 ,北纬 36°0 5′一线为甘肃草本植物区系中的一条可能的分界线。

families,161 genera and 531 species of herbaceous plants from Gansu have been sorted and the relation between species distribution and their latitude analysed.The results showed that the line of 36°05′ N is a probable line of the herbaceous plant flora in Gansu.