Characterization of greenhouse gas emissions from the alfalfa field in Loess Plateau during different planting years

• ZHANG Yaoquan, 
• DENG Changfang, 
• LUO Zhuzhu, 
• NIU Yining, 
• LI Lingling, 
• CAI Liqun, 
• XIE Junhong, 
• MA Xin