1. Shandong Provincial Lunan Geology and Exploration Institute (Shandong Provincial Bureau of Geology and Mineral Resources No. 2 Geological Brigade), Jining 272100, China
2. Key Laboratory of Karst Geology, Shandong Provincial Bureau of Geology and Mineral Resources, Jining 272100, China
3. Institute of Advanced Studies, China University of Geosciences, Wuhan 430078, China
4. Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
5. Center for Soil Pollution Control of Shandong, Department of Ecological Environment of Shandong Province, Jinan 250101, China
6. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China