1. Institute of Bio- and Geosciences - Agrosphere (IBG-3); Forschungszentrum Jülich GmbH; 52425 Jülich Germany
2. Key Laboratory of Mountain Surface Processes and Ecological Regulation; Institute of Mountain Hazards and Environment; Chinese Academy of Sciences; 610041 Chengdu China
3. State Key Laboratory of Environmental Geochemistry; Institute of Geochemistry; Chinese Academy of Sciences; 550081 Guiyang China
4. Puding Karst Ecosystem Observation and Research Station; Anshun 561000 Guizhou China
5. College of Surveying and Planning; Shangqiu Normal University; 476000 Henan China