1. School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
2. Ejina Institute of Populus euphratica, Beijing Forestry University, Ejin Banner 735400, China
3. Hebei Collaborative Innovation Center for Eco-Environment, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, China
4. College of Life Sciences and Technology, Tarim University, Aral 843300, China