1. Key Laboratory of Low-Carbon and Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, P. R. China
2. Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, Nanjing, P. R. China
3. Korea Biochar Research Center, APRU Sustainable Waste Management Program and Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Korea
4. Sustainable Minerals Institute, The University of Queensland, Brisbane, Australia
5. Department of Soil and Groundwater Management, University of Wuppertal, Wuppertal, Germany
6. Environment Centre Wales, Bangor University, Bangor, UK
7. Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch, Australia