Author(s): Leff, Billie; Ramankutty, Navin; Foley, Jonathan A.
Abstract: Humans have transformed the surface of the planet through agricultural activities, and today, ∼12% of the land surface is used for cultivation and another 22% is used for pastures and rangelands. In…Publication: Global Biogeochemical CyclesbrPublished: 2004Published date: 2004Vol: 18Issue: 1DOI: 10.1029/2003GB002108URL: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2003GB002108Publication: Global Biogeochemical Cycles