1. College of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou 450001, China
2. Geothermal and Ecological Geology Research Center, Zhengzhou University, Zhengzhou 450001, China
3. College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
4. Department of Geology, College of Earth Science and Engineering, University of Dodoma, Dodoma P.O. Box 11090, Tanzania
5. China Institute of Geo-Environmental Monitoring, Beijing 100081, China