1. Plant Ecology and Geobotany, Faculty of Biology, Univ. of Marburg Marburg Germany
2. Environmental Informatics, Faculty of Geography, Univ. of Marburg Marburg Germany
3. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Inst. of Botany, Chinese Academy of Sciences Kunming China
4. Biogeography and High Mountain Research, Faculty of Geography, Univ. of Marburg Marburg Germany