Table 6 Crop area accuracy assessment by decade.
Year | Estimated | Carreras & Tafunell (2005) | Absolute error (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
Irrigated | Rainfed | Total crop area | Irrigated | Rainfed | Total crop area | Irrigated | Rainfed | Total crop area | |
1900 | — | — | 16060 | — | — | 17822 | — | — | 9,9 |
1930 | — | — | 19120 | — | — | 21964 | — | — | 12,9 |
1960 | 2226 | 18361 | 20587 | 1828 | 18694 | 20522 | 21,7 | 1,8 | 0,3 |
1970 | 2770 | 17763 | 20533 | 2198 | 18321 | 20520 | 26,0 | 3,0 | 0,1 |
1980 | 2932 | 17145 | 20077 | 2822 | 17677 | 20499 | 3,9 | 3,0 | 2,1 |
1990 | 2978 | 16494 | 19472 | 3199 | 16973 | 20172 | 6,9 | 2,8 | 3,5 |
2000 | 3667 | 14421 | 18088 | 3408 | 14897 | 18304 | 7,6 | 3,2 | 1,2 |
