This dataset contains the R code, the input data, the parameters used, and the results that support the finding of Chang, J., Peng, S., Yin, Y., Ciais, P., Havlik, P., Herrero, M. (2021). The key role of production efficiency changes in livestock methane emission mitigation. AGU Advances, 2, e2021AV000391. DOI: https://doi. org/10.1029/2021AV000391 1. R code: Chang_et_al_Global_Livestock_CH4_Assessment.R 2. Input data and parameters: Data.zip (statistics on historical livestock numbers and production, and the FAO projections on future development of livestock numbers and production need to be downloaded from FAOSTAT (http://www.fao.org/faostat/en/) and FAO (2018). "The future of food and agriculture – Alternative pathways to 2050." 3. Results: Results.zip Please contact: Dr. Jinfeng Chang (changjf@zju.edu.cn) for any question on the dataset.

{"references": ["Chang, J., Peng, S., Yin, Y., Ciais, P., Havlik, P., Herrero, M. (2021). The key role of production efficiency changes in livestock methane emission mitigation. AGU Advances, 2, e2021AV000391. DOI: https://doi. org/10.1029/2021AV000391"]}