Disentangling the mechanisms behind winter snow impact on vegetation activity in northern ecosystems

Xiaoyi Wang1, Tao Wang2, Hui Guo1, Dan Liu2, Zhao Yutong3 and Shilong Piao4, (1)ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, (2)Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, (3)Chinese Academy of Sciences, Beijing, China, (4)Peking University, College of Urban and Environmental Sciences, Beijing, China