Farming the planet: 1. Geographic distribution of global agricultural lands in the year 2000
Article first published online: 17 JAN 2008
Copyright 2008 by the American Geophysical Union.
Global Biogeochemical Cycles
Volume 22, Issue 1, March 2008
How to Cite
2008), Farming the planet: 1. Geographic distribution of global agricultural lands in the year 2000, Global Biogeochem. Cycles, 22, GB1003, doi:10.1029/2007GB002952., , , and (
- Issue published online: 17 JAN 2008
- Article first published online: 17 JAN 2008
- Manuscript Accepted: 14 AUG 2007
- Manuscript Revised: 12 JUN 2007
- Manuscript Received: 5 FEB 2007
- land use;
- land cover;
- global data
 Agricultural activities have dramatically altered our planet's land surface. To understand the extent and spatial distribution of these changes, we have developed a new global data set of croplands and pastures circa 2000 by combining agricultural inventory data and satellite-derived land cover data. The agricultural inventory data, with much greater spatial detail than previously available, is used to train a land cover classification data set obtained by merging two different satellite-derived products (Boston University's MODIS-derived land cover product and the GLC2000 data set). Our data are presented at 5 min (∼10 km) spatial resolution in longitude by longitude, have greater accuracy than previously available, and for the first time include statistical confidence intervals on the estimates. According to the data, there were 15.0 (90% confidence range of 12.2–17.1) million km2 of cropland (12% of the Earth's ice-free land surface) and 28.0 (90% confidence range of 23.6–30.0) million km2 of pasture (22%) in the year 2000.