The influence of livestock grazing on grasshopper were compared in the three different grazing intensities in Leymus chinensis prairie in Inner Mongolia,China.Results indicate that the plant biomass was the lowest and the grasshopper density was the highest in the heavily grazed area.In this area,the habitat structure was benifit for the terricole grasshopper to select.In no grazed area,however,the plant biomass was the hightest and the habitat structure was benefit for the planticole grasshopper to sec...