1. Department of Ecosystem Science and Management, University of Wyoming, Laramie, Wyoming 82071, United States
2. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
4. Geosciences and Environmental Change Science Center, U.S. Geological Survey, Denver, Colorado 80225, United States
5. Canadian Light Source Incorporated, University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada