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. 2010 Feb 8;107(8):3388–3393. doi: 10.1073/pnas.0907318107

Fig. 2.

Fig. 2.

Direct, indirect, and total LUC areas (A), carbon debt (B), and time to repay debt (C) for fulfilling Brazil’s biofuel (sugarcane ethanol and soybean biodiesel) production targets for 2020. Here the land-use category “cropland” excludes sugarcane and soybean. Other nat. veg., other natural vegetation; W. savanna, woody savanna.