1. Department of Earth System Science Tsinghua University Beijing China
2. School of Earth and Ocean Sciences Cardiff University Cardiff UK
3. The College of Environment and Planning Henan University Kaifeng China
4. Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University) Ministry of Education Kaifeng China
5. Henan Overseas Expertise Introduction Center for Discipline Innovation (Ecological Protection and Rural Revitalization along the Yellow River) Henan University Kaifeng China
6. Department of Geographical Science University of Maryland College Park MD