1. Institute of Soil Science, Leibniz University of Hannover, Herrenhäuser Str. 2, 30419 Hannover, Germany
2. Institute of Geography and Geology, Greifswald University, Friedrich‐Ludwig‐Jahn Str. 17a, 17487 Greifswald, Germany
3. Department of Pedology and Soil Environment, Faculty of Environmental Sciences, University of Science, 334‐Nguyen Trai, Hanoi, Vietnam