Soil microbes were collected from the root zone of dominant native plants Leymus chinensis and Stipa baicalensis on Hulunber meadow.The diversity and dominant species of microbes were analyzed based on isolation,culture and biochemical analysis.The results demonstrated that the treatments could be ranked according to the gross amount of microbes in a descending order as: Leymus chinensisStipa baicalensisControl.However,no significant difference was found among the treatment(p0.05).In the samples,bacteria had the highest species numbers,actinomyces had the intermediate,and fungi had the lowest(p0.01).Specifically,36 colonies of bacteria belonging to 7 genera,21 colonies of actinomyces belonging to 4 genera,and 17 fungi culturists of 3 genera were identified in the root zone soil of Leymus chinensis along.