| 序号 No. | 科名 Family names | 物种数 Num. of species | 百分比(%) Percent (%) |
| 1 | 菊科Compositae | 461 | 12.41 |
| 2 | 禾本科Gramineae | 364 | 9.80 |
| 3 | 豆科Leguminosae | 314 | 8.45 |
| 4 | 毛茛科Ranunculaceae | 188 | 5.06 |
| 5 | 蔷薇科Rosaceae | 187 | 5.03 |
| 6 | 十字花科Brassicaceae | 171 | 4.60 |
| 7 | 唇形科Labiatae | 153 | 4.12 |
| 8 | 藜科Chenopodiaceae | 148 | 3.98 |
| 9 | 石竹科Caryophyllaceae | 136 | 3.66 |
| 10 | 伞形科Umbelliferae | 122 | 3.28 |
| 11 | 百合科Liliaceae | 113 | 3.04 |
| 12 | 紫草科Boraginaceae | 109 | 2.93 |
| 13 | 莎草科Cyperaceae | 105 | 2.83 |
| 14 | 蓼科Polygonaceae | 101 | 2.72 |
| 15 | 玄参科Scrophulariaceae | 89 | 2.40 |
| 16 | 杨柳科Salicaceae | 77 | 2.07 |
| 17 | 龙胆科Gentianaceae | 46 | 1.24 |
| 18 | 虎儿草科Saxifragaceae | 42 | 1.13 |
| 19 | 茜草科Rubiaceae | 42 | 1.13 |
| 20 | 罂粟科Papaveraceae | 38 | 1.02 |