Greenhouse gas emissions in natural and agricultural lands in sub-Saharan Africa: synthesizing of available data and suggestions for further studies

Dong-Gill Kim, Wondo Genet College of Forestry and Natural Resources, Hawassa University, Shashemene, Ethiopia, Andrew D Thomas, Aberystwyth University, Aberystwyth, United Kingdom, David Pelster, International Livestock Research Institute, Nairobi, Kenya, Todd S Rosenstock, World Agroforestry Centre (ICRAF), Nairobi, Kenya and Alberto Sanz-Cobena, Universidad Politécnica de Madrid, CEIGRAM, Madrid, Spain