The temporal dynamics of the biomass,as well as the carbon (C),nitrogen (N),phosphorus (P) concentrations and accumulation contents,in above-and below-ground vegetation components were determined in the alpine steppe vegetation of Northern Tibet during the growing season of 2010.The highest levels of total biomass (311.68 g m-2),total C (115.95 g m-2),total N (2.60 g m-2),and total P (0.90 g m-2) accumulation contents were obtained in August in 2010.Further,biomass and nutrient stocks in the below-ground components were higher than those of the above-ground components.The dominant species viz.,Stipa purpurea and Carex moorcrofti had lower biomass and C,N,P accumulations than the companion species which including Oxytropis.spp.,Artemisia capillaris Thunb.,Aster tataricus L.,and so on.
