1. State Key Laboratory of Nuclear Resources and Environment East China University of Technology Nanchang 330013 China
2. School of Earth Sciences East China University of Technology Nanchang 330013 China
3. Institute of Geography and Regional Development University of Wrocław pl. Uniwersytecki 1 50‐137 Wrocław Poland
4. School of Tourism Hainan University Haikou 570228 China
5. Shaanxi Mineral Resources and Geological Survey Xi'an 710068 China