Estimated agricultural soil carbon fluxes were produced using the CENTURY biochemical model (NREL-CSU), a point model that produces monthly or annual time-step estimates of soil carbon stocks, given specified site, climate and management scenarios. Point estimates were extrapolated to a county-level basis using spatial databases of land use, climate and soils. Data sources: 2006 NCDC; 2005 NRCS;1997 USDA; 2005 CTIC.
Scenario 3: This map shows modeled change in estimated soil carbon fluxes in accord with a 25% increase in area under Conservation Reserve Program, at expense of areas of conventional tillage.
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