Effects of Elymus sibiricus and Medicago sativa intercropping on pasture soil C, N, and P stoichiometric characteristics

• DU Shuangshuang, 
• LI Xia, 
• LU Xin, 
• JIA Yanwei, 
• SAI Ninggang, 
• QI Ximing, 
• SHEN Liyu, 
• ZHANG Xiushan, 
• QI Juan