| Through field investigation, sample identification and data inquiry, the species, oil content and reserves of wild oil plant resources in Hebei Zhangshiyan area were statistically analysed. The results showed that 79 species, belonging to 72 genera and 39 families, were distributed in this area, accounting for 35.91% of the total number of plants in Zhangshiyan area. From the perspective of specy composition, Lamiaceae, Asteraceae, Rosaceae, Cruciferae and Leguminosae were dominant groups. In terms of life form, the quantity of herb plants was more than woody plants, accounting for 51.90% and 37.97% of the oil plants respectively. In the aspect of oil content, the most species were the plants with oil content in the range of 10%-20%, and nearly half of the oil plants were found more than 30%. In terms of oil composition, 72.15% of oil plants were rich in linoleic acid, linolenic acid and other polyunsaturated fatty acids. The Lamiaceae, Asteraceae, Brassicaceae, Leguminosae, Pinaceae and Juglandaceae plants had the items of rich reserve, high oil content and broad application prospect, which could be the wild oil plant for priority development in Zhangshiyan area. |
