Bernhard Schmid1,*, Pu Wang2, Lijuan Liu2, Shiqiang Wan3 and Yao Huang2
1 Department of Geography, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland 2 Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing 100093, China 3 College of Life Sciences, Hebei University, No. 180, Wusidong Road, Baoding, Hebei 071002, China *Corresponding address. Department of Geography, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland. E-mail: bernhard.schmid@uzh.ch
