Based on the study of the mechanism of biotechnical slope protection,mechanical model were developed in the condition of surface soil reinforced with herb-root in geo-grid.
64.As a very special vegetation type in China, Quercus aquifolioides are widely distributed in the Hengduanshan Mountain area, belonging to a type of the sub-alpine sclerophyllous oak forest.
Where aridity, degeneration or soil erosion occurs as a result of overgrazing, users of the grasslands shall be required to reduce grazing and resow forage grass so as to restore vegetation.