About 52% area of Jiuzhaigou Valley is covered by virgin forest and the forest at the top of Rize Valley is part of it. Seeing the luxuriantly green trees, walking on thick and soft lichens, smelling the fragrant and moist air, and listening to the sound of wind and bird-song you will find that you are coming into a new isolated world. In the lower part of the south of mountains, Chinese pines, oaks and spruces grow thickly and in the north Chinese hemlocks, maples, birches and fir trees are flourishing. In the upper part of mountains are alpine shrubs and alpine meadows.