Global ecoregions:	The Terrestrial Ecoregions Of the World (Olson et al., 2001) were used as the spatial analysis unit, because of commonalities in vegetation which mediates climate-fire relationships as in previous studies (e.g., Abatzoglou et al., 2018).
Land cover:	The Land Cover Climate Change Initiative (LC-CCI) v.1.6.1 Annual Global Land Cover (2002–2015) was used to mask unburnable surfaces and to define land cover types within ecoregions. The LC-CCI 300-m resolution maps are generated from MERIS, PROBA-V, SPOT-VGT, and AVHRR data (CCI-LC, 2017).
Livestock density:	Gridded Livestock of the World (GLW 3) global subnational livestock distribution data for 2010 at 0.083333° (Gilbert et al., 2018). Densities of different livestock species were combined into actual carrying capacity (ACC) defined in equivalent tropical livestock units, applying the conversion factors for cattle (0.70), sheep, and goats (0.10) proposed by Pica-Ciamarra et al. (2007).
Road density:	Global Roads Inventory Project global gridded road density data set at 8-km resolution (Meijer et al., 2018).