Table 4 Changes in US cropland by AEZ due to US ethanol production (1,000 ha)
From: The role of irrigation in determining the global land use impacts of biofuels
| Â | Unconstrained | Constrained | ||||
|---|---|---|---|---|---|---|
| Â | Irrigated | Rainfed | Total | Irrigated | Rainfed | Total |
AEZ | Â | Â | Â | Â | Â | Â |
 AEZ1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ7 | 1,550.5 | −1,349.2 | 201.3 | 0.0 | 291.7 | 291.7 |
 AEZ8 | 580.6 | −449.9 | 130.7 | 0.0 | 183.7 | 183.7 |
 AEZ9 | 0.7 | 49.1 | 49.8 | 0.9 | 58.6 | 59.4 |
 AEZ10 | 8.6 | 469.8 | 478.4 | 9.9 | 541.3 | 551.2 |
 AEZ11 | 8.6 | 334.5 | 343.1 | 10.1 | 390.6 | 400.7 |
 AEZ12 | −6.5 | 125.7 | 119.2 | −9.0 | 176.6 | 167.6 |
 AEZ13 | 24.2 | −18.4 | 5.8 | 0.0 | 11.6 | 11.6 |
 AEZ14 | −0.3 | 4.6 | 4.3 | 0.0 | 4.7 | 4.7 |
 AEZ15 | 0.0 | 0.3 | 0.4 | 0.0 | 0.6 | 0.6 |
 AEZ16 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ17 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 AEZ18 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Total | 2,166.5 | −833.5 | 1,333.0 | 11.8 | 1,659.3 | 1,671.2 |