1. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany Chinese Academy of Sciences Beijing China
2. Erguna Forest‐Steppe Ecotone Ecosystem Research Station, Institute of Applied Ecology Chinese Academy of Sciences Shenyang China
3. CSIC Global Ecology Unit CREAF‐CSIC‐UAB Bellaterra Spain
4. CREAF Cerdanyola del Vallès Spain
5. Sydney Institute of Agriculture, School of Life and Environmental Sciences The University of Sydney Camden New South Wales Australia
6. School of Life Sciences, Hebei University Baoding China
7. College of Advanced Agricultural Sciences University of Chinese Academy of Sciences Beijing China