Based on the results observed in plots and from statistical analysis,vegetation coverage,species diversity,richness,number of species,index of grassland quality,and biomass percentage of palatable herbage are selected as the evaluation indices to study grassland degradation and protection countermeasures on the subalpine meadow.Using the typical ecological area on the grassland of subalpine meadow,the relationships between the evaluation indices and existing circumstances are analyzed.Results show that the quantificational indices reflecting the ecology of vegetation are considered in the method.The indices are closely related each other and are correlative.They are easy to be derived and applied,in accord with the local conditions of the ecological quality,and can be used to scientifically and objectively appraise the regional ecological quality on the grassland of subalpine meadow.Excessive grazing,excessive and disordered mining,human destruction,and biological chain unbalance are artificial factors of grassland ecology degeneration.Therefore,to control excessive grazing,stop excessive and disordered mining,and build some natural preservation areas are the protection countermeasures of ecology and environment.