Restoration of a hillslope grassland with an ecological grass species (Elymus tangutorum) favors rainfall interception and water infiltration and reduces soil loss on the Qinghai-Tibetan Plateau

•Poor palatability allows eco-grass to accumulate litter in grassland community.•Eco-grass reduces soil loss by increasing rainfall interception and water infiltration.•Eco-grass has ecological benefits and soil and water conservation benefits.