School of Chemical Engineering;
Northwest University for Nationalities;
Lanzhou 730000;
China;
Institute of Arid Meteorology;
China Meteorological Administration;
Gansu Key Laboratory of Arid Climate Changes and Disaster Reduction;
Lanzhou 730020;
China;
Key laboratory of Arid and Grassland Ecology;
Ministry of Education;
Lanzhou University;
Lanzhou 730000;
China;