甘肃壳斗科植物的地理分布和区系特点

报道了甘肃产壳斗科植物５属，２１种、２变种。其中新种１，分布新记录５种。甘肃壳斗科植物的地理分布分为３个植物地区（陇南山地植物区、黄土高原植物区、甘南高寒山地植物区），在陇南山地植物区中，文县、武都、康县南部的陇南山地集中分布有２２种，占甘肃产壳斗科植物种类的９６％；地理成分可分为２个分布型，９个亚型。

The geographical distribution and flora features of Fagaceae family in Gansu

This paper indicates that there are 5 genera 21 species and 2 variefies of Fagaceae family in Gansu, among them there are a new species and 5 species which recorded for the first time in Gansu. Meanwhile , the geographical distribution of Fagaceae family in Gansu have been divided into 3 floristic distrcts: Longnan mountains the loess plateau and Gannan high cold mountains. There are 22 species distributed massly in Longnan mountains floristic district, which account for 96 percent of all in Gansu and include 2 distribution type and 9 subtype.