Table 6.
Water footprint by region in 1999.
| region | use of domestic resources | net virtual water import | water footprint | water footprint per capita | water self-sufficiency | ||||
|---|---|---|---|---|---|---|---|---|---|
| blue water | green water | total | |||||||
| surface water | ground water | sub-total | |||||||
| (109 m3 yr−1) | (109 m3 yr−1) | (109 m3 yr−1) | (109 m3 yr−1) | (109 m3 yr−1) | (109 m3 yr−1) | (109 m3 yr−1) | (m3 yr−1) | (%) | |
| north-central | 5.5 | 7.0 | 12.5 | 26.6 | 39.1 | 20.4 | 59.5 | 1092 | 66 |
| Huang-huai-hai | 56.4 | 33.9 | 90.3 | 255.4 | 345.7 | −48.7 | 297.0 | 954 | 100 |
| northeast | 49.1 | 23.0 | 72.1 | 122.9 | 195.0 | −32.3 | 162.7 | 1253 | 100 |
| northwest | 68.7 | 12.4 | 81.1 | 45.6 | 126.7 | 1.2 | 127.9 | 1425 | 99 |
| north | 179.7 | 76.3 | 256.0 | 450.5 | 706.5 | −59.4 | 647.1 | 1106 | 100 |
| Yangtze | 118.1 | 5.9 | 124.0 | 116.6 | 240.6 | −10.7 | 229.9 | 960 | 100 |
| southeast | 48.4 | 1.1 | 49.5 | 25.9 | 75.4 | 33.5 | 108.9 | 1176 | 69 |
| south-central | 74.2 | 3.7 | 77.9 | 41.2 | 119.1 | 33.8 | 152.9 | 1199 | 78 |
| southwest | 49.4 | 2.9 | 52.3 | 101.1 | 153.4 | 12.0 | 165.4 | 837 | 93 |
| south | 290.1 | 13.6 | 303.7 | 284.8 | 588.5 | 68.6 | 657.1 | 999 | 90 |
| national total | 469.8 | 89.9 | 559.7 | 735.3 | 1295.0 | 9.2 | 1304.2 | 1049 | 99 |