Percent Grassland Area by Terrestrial Ecoregion

Nov 14, 2011 (Last modified Jan 13, 2016)
Uploaded by TNC GIS Staff
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Percent of ecoregion area covered with grassland habitat.

We derived the grasslands map from grassland classes of the Global Land Cover 2000 data set (JRC 2003) with areas of human habitation and infrastructure from the Global Rural-Urban Mapping Project database (CIESIN et al. 2004) removed. We applied a zonal sum procedure to those data to show the amount of forest by ecoregion.

These data were derived by The Nature Conservancy, and were displayed in a map published in The Atlas of Global Conservation (Hoekstra et al., University of California Press, 2010). More information at

Data derived from:
Center for International Earth Science Information Network (CIESIN), International Food Policy Research Institute (IFPRI), the World Bank, and Centro Internacional de Agricultura Tropical (CIAT). 2004. Global Rural-Urban Mapping Project (GRUMP): Urban Extents, Columbia University Palisades, New York, USA. Available at Digital media.

Joint Research Centre of the European Commission (JRC). 2003. GLC 2000: Global Land Cover Mapping for the Year 2000. Ispra, Italy: European Commission Joint Research Centre, Institute for Environment and Sustainability. Available at Digital media.
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The Nature Conservancy
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Hoekstra, J. M., J. L. Molnar, M. Jennings, C. Revenga, M. D. Spalding, T. M. Boucher, J. C. Robertson, T. J. Heibel, with K. Ellison. 2010. The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference. Ed. J. L. Molnar. Berkeley: University of California Press.
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GIS staff with The Nature Conservancy

This is a shared account for TNC staff to use to upload spatial data, to avoid the problem of data being "orphaned" when an individual leaves TNC.