Seabuckthorn is a subspecies of Hippophae in Cucurbitaceae, a deciduous tree species on the ancient river bank, with beautiful appearance. This tree was originally a shrub. In northwest China, it is an excellent tree species for windbreak and sand fixation. In Siguniang Mountain, affected by the special ecological environment of the scenic spot, they have grown into towering trees, with a maximum height of 20 to 30 meters. There is a female tree with the largest diameter of 193 cm in the scenic spot, which is 2000 years old and is the "king of trees" in the ditch. Such a large-scale distribution of huge Hippophae rhamnoides community is rare in the world.

Before the virgin forest was cut down, it was not easy to see seabuckthorn trees, because other tall trees would cover them. Small seabuckthorn trees have to grow up desperately because they need sunshine, and eventually grow into big trees. After those big trees were cut down by loggers, seabuckthorn trees were exposed one by one, which became a great landscape in Shuangqiaogou now.

Seabuckthorn trees alternate or alternate, dioecious. Ripe seabuckthorn fruit contains a lot of trace elements such as Vc, Va and Vp, so it has the reputation of "King of Vc" in the world. Vc has the effects of enhancing skin immunity, slimming and bodybuilding. In Rilong Town, there is a seabuckthorn beverage made of seabuckthorn fruit, which can be bought and tasted by interested friends, and can also be given to relatives and friends as a local specialty.

Seabuckthorn trees have different shapes and green leaves, which bloom in May and bear fruit in June. In late autumn, the green leaves are covered with small golden fruits. Because of the strange tree shape, the painter called it "Chinese painting tree"; Because of its growth characteristics, poets also call it "myth tree". Every year from mid-August to165438+1late October, it is the best season to enjoy the three-dimensional bonsai of seabuckthorn.