Petri et al. (2010)
Also: Petri et al. 2010
Carbon status and carbon sequestration potential in the world’s grasslands
Petri, M., Batello, C., Villani, R., & Nachtergaele, F. (2010). Carbon status and carbon sequestration potential in the world’s grasslands. Grassland carbon sequestration: management, policy and economics, 11, 19. Link to PDF
References
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.