Fig. 3
From: Soil erosion and lateral carbon fluxes from corn stover-derived biofuel

Simulated soil erosion rates averaged over the U.S. Midwest (a), cropland area exceeding soil erosion tolerance threshold (T-value) (b), and economic cost of soil erosion induced by corn stover collection (c) under different assumptions of soil conservations and stover removal levels. The error bars represent one standard deviation across the counties in the U.S. Midwest. CP represents a conservation scenario that reduces soil erosion by 50% as compared with the NCP scenario where no conservation practices are applied. 0r, 33r and 66r represent 0%, 33% and 66% stover removal, respectively.