1. Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Lanzhou PR China
2. University of Chinese Academy of Sciences Beijing PR China
3. Key Laboratory of Strategic Mineral Resources of the Upper Yellow River Ministry of Natural Resources Lanzhou PR China
4. Naiman Desertification Research Station, Northwest Institute of Eco‐Environment and Resources Chinese Academy of Sciences Tongliao PR China
5. School of Environmental and Municipal Engineering Lanzhou Jiaotong University Lanzhou PR China