Assessing the net climate benefits of improved grazing intensity in global rangelands
Évaluation des bénéfices climatiques nets d'une intensification du pâturage dans les pâturages du monde entier
Powell, Robert S. ; Davis, Steven J. ; Encarnation, David G. ; Piipponen, Johannes ; Chang, Jinfeng ; Currier, Courtney M. ; Erb, Karl-Heinz ; Eze, Samuel ; Hong, Chaopeng ; Ploton, Pierre ; Ren, Shuai ; Smith, Pete ; Su, Jishuai ; Tempio, Giuseppe ; Terrer, Cesar ; Wisser, Dominik ; Xu, Fengwei ; Pellegrini, Adam F. A.
Année de publication
2026
Improved rangeland grazing could mitigate climate change through carbon dioxide (CO2) sequestration in soils and vegetation. However, altering grazing practices to increase ecosystem carbon storage may also decrease livestock production and/or increase greenhouse gas emissions through the supply chain, such that the net emissions impacts remain unclear. Here, we assess the global net mitigation potential of improving grazing intensity by quantifying potential CO2 sequestration alongside systems-level impacts of plant productivity changes, livestock emissions, feed requirements, and production constraints. Improving grazing intensity in global rangelands could sequester 2.2 ± 0.43 gigatons of carbon dioxide equivalent (Gt/CO2eq) per year in the near term, but maintaining livestock production through supplemental feeding would reduce net mitigation by 2 to 31% (to 1.8 ± 0.45 GT/CO2eq per year). Our results suggest that neglecting systems-level emissions impacts may substantially overestimate the global climate benefits of improved grazing.</div>
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