Zhou H k,Zhou L,Liu W,Zhao X Q,Lai D Z.Causes of grassland degradation and sustainable development of animal husbandry in Maduo County,Qinghai provinces[J].Grassland of China,2003,25(6):63-67.

• [5]周华坤；周立；刘伟；赵新全；来德珍.；青海省玛多县草地退化原因及畜牧业可持续发展[J]