Grass-shrub-forest artificial vegetation restoration method for sub-alpine soil material field

The invention discloses a grass-shrub-forest artificial vegetation recovery method for a sub-alpine soil material field. The method comprises the following steps: selecting elymus nutans and siberian wildrye as grass seeds for unicast; gravels are placed on the upper layer of the recovered surface soil, so that heat preservation, water retention and fertilizer retention of the soil are facilitated, and growth of plant roots is promoted. According to the method, by exploring artificial grass seed planting and proportion matching thereof, a placement technology for promoting plant growth through gravels, an optimal topsoil covering thickness scheme, tree and shrub transplanting and maintenance means, miscanthus amurensis turf transplanting and other technologies, and through three-year continuous monitoring, the yield of the miscanthus amurensis can be improved. A good vegetation recovery scheme is constructed, and the survival rate of the spruce tree species after maintenance in two growing seasons is close to