1. School of Earth Sciences and Engineering, Hohai University, Nanjing 211100, China
2. Jiangsu Province Engineering Research Center for Agricultural Soil-Water Efficient Utilization, Carbon Sequestration and Emission Reduction, Nanjing 211100, China
3. College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China
4. CERIS/Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal