1. BIO5 Institute, The University of Arizona, 1657 East Helen Street., Tucson, Arizona 85719, United States
2. Biosphere 2, University of Arizona, 32540 South Biosphere Road, Oracle, Arizona 85739, United States
3. Department of Environmental Science, University of Arizona, 1177 East Fourth Street, Tucson, Arizona 85721, United States
4. Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
5. Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
6. School of Natural Resources and the Environment, University of Arizona, 1064 East Lowell Sreet, Tucson, Arizona 85721, United States
7. Biogeochemistry of Agroecosystems, Department of Crop Science, Georg August University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
8. State Key Laboratory of Soil Erosion and Dry Land Farming on Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, 712100 Shaanxi, China