1 State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland Microbiome, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Grassland Microbe Centre, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, 730020, China.
2 State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland Microbiome, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Grassland Microbe Centre, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, 730020, China. xxzhang@lzu.edu.cn.