Effects of annual plant functional group on biomass and soil respiration in a grazing community of a typical steppe grassland

• Mao-wei Liang, 
• Cun-zhu Liang, 
• Xue Bai, 
• Bai-ling Miao, 
• Ying-shun Wang, 
• Gui-rong Bao, 
• Xuan Wang