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.