Vegetation and soil stoichiometry characteristics of degraded alpine meadows in the source region of the Yangtze River

• LI Chengyang, 
• LIANG Yutong, 
• WANG Binbin, 
• CAI Miaoying, 
• LIU Qi, 
• LAI Chimin, 
• SUN Jianbo, 
• PENG Fei