1. Institute of Geography and Geoecology Karlsruhe Institute of Technology Reinhard‐Baumeister‐Platz 1, 76131 Karlsruhe Germany
2. Institute of Geography Univ. of Bern Hallerstrasse 12, 3012 Bern Switzerland
3. Shanghai Carbon Data Research Center, Key Lab. of Low‐carbon Conversion Science and Engineering, Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China
4. State Key Lab. of Loess and Quaternary Geology, Institute of Earth Environment Chinese Academy of Sciences Xi'an 710061 China
5. School of Human Settlements and Civil Engineering Xi'an Jiaotong Univ. Xi'an 710049 China
6. Dep. of Multiphase Chemistry Max Planck Institute for Chemistry Hahn‐Meitner‐Weg 1, 55128 Mainz Germany