1. State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University Beijing China
2. Department of Land Evaluation China Land Surveying and Planning Institute Beijing China
3. Farming Department Kadyrov Chechen State University Grozny Russia
4. Department of Soil Science of Temperate Ecosystems University of Göttingen Göttingen Germany
5. Peoples Friendship University of Russia (RUDN University) Moscow Russia
6. Institute of Environmental Sciences Kazan Federal University Kazan Russia