1. Faculty of Geo‐information Science and Earth Observation (ITC)University of Twente Enschede The Netherlands
2. Institute of Bio‐ and Geosciences: Agrosphere (IBG‐3)Forschungszentrum Jülich GmbH Jülich Germany
3. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, School of Water and EnvironmentChang'an University Xi'an China