1. Institute of Surface‐Earth System Science, School of Earth System Science Tianjin Univ. Tianjin 300072 China
2. Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim Tianjin Univ. Tianjin 300072 China
3. Key Laboratory of Karst Georesources and Environment, Ministry of Education, College of Resources and Environmental Engineering Guizhou Univ. Guiyang 550025 China
4. Institute of Resource, Ecosystem and Environment of Agriculture, College of Resources and Environmental Sciences Nanjing Agricultural Univ. Nanjing 210095 China