The Regulation of Reproductive Growth of Stipa Grandis and Stipa Baicalensis in Hulunber Steppe Chromosome Numbers and Karyotypes of Stipa baicalensis,Stipa grandis and Stipa krylovii in Inner-mongolia Steppe Responses of photosynthetic characteristics of Stipa baicalensis to grazing disturbance Effects of nitrogen and water addition on plant species diversity and biomass of common species in the Stipa baicalensis Steppe, Inner Mongolia, China Effects of nutrient addition on plant diversity and productivity in a Stipa baicalensis grassland in Inner Mongolia, China Analysis of Grassland Vegetation of the Southwest Heilongjiang Steppe Responses of soil microbial functional diversity to nitrogen and water input in Stipa baicalensiss teppe, Inner Mongolia, Northern China Effect of Grazing Disturbance on Soil Microorganisms and Soil Enzyme Activities of Stipa baicalensis Rosev.Steppe Analysis of Structure Types of Botanical Composition of Stipa baicalensis Meadow Steppe in the Songnen Plains of China Response of Soil Enzyme Activity and Microbial Biomass Carbon and Nitrogen to the Nutrient Addition of Stipa Baicalensis Steppe in Inner Mongolia