CH4, CO2 and N2O flux among three types of alpine meadow in the north regions of Qinghai-Tibetan Plateau

• Xiao-wei Guo, 
• Yan-gong Du, 
• Li Lin, 
• Yi-kang Li, 
• Fa-wei Zhang, 
• Qian Li, 
• Shu-li
  Liu, 
• Jing-zheng Ouyang, 
• Guang-min Cao