1. Water Conservancy and Civil Engineering College Inner Mongolia Agricultural University Hohhot China
2. State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian China
3. School of Mathematics and Physics Bohai University Jinzhou China
4. Lammi Biological Station, Ecosystems and Environment Research Programme Faculty of Biological and Environmental Sciences University of Helsinki Lammi Finland
5. Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Science Lanzhou China
6. Institute of Atmospheric and Earth Sciences University of Helsinki Helsinki Finland