Table 2
Initial data for the water-demand agents in the study area
| Water-demand agents | Amount of water consumption (108m3) | Water-demand prediction | Initial amount of water demand (108 m3) | Other | ||||
|---|---|---|---|---|---|---|---|---|
| Year 2015 | Year 2030 | Year 2015 | Year 2030 | Year 2015 | Year 2030 | |||
| Agricultural agent | 312.50 | 311.66 |  | 423.66 | 366.10 | |||
| Domestic agent | 16.20 | 16.16 |  | 24.31 | 26.19 | T= 0.17 R = 3.81 × 107 | T= 0.17 R = 4.11 × 107 | |
| Industrial agent | 23.80 | 23.74 |  | 29.36 | 46.71 | K= 0.65 | K= 0.50 | |
| Ecological agent | 2.60 | 18.50 |  | 17.77 | 18.50 | |||
| Land usage type (year 2015 and 2030) | Agricultural agent | Ecological agent | ||||||
| Rice | Corn | Soybean | Wheat | Other | Forests land | Grassland | Wetland | |
| Land acreage (104hm2) | 384.30 | 772.30 | 248.60 | 7.50 | 20.10 | 2,183.70 | 206.30 | 431.48 |
| Net irrigation quota (m3/hm2) | 4,800 | 800 | 950 | 900 | 1,000 | |||
| Irrigation water use coefficient | 0.7, 0.8 | 0.55, 0.65 | 0.55, 0.65 | 0.55, 0.65 | 0.55, 0.65 | |||
| Per unit area yield (t/hm2) | 5.72 | 4.59 | 1.76 | 2.91 | 6.02 | |||
| Unit-price (104yuan/t) | 0.48 | 0.23 | 0.45 | 0.25 | 6.91 | |||
| Equivalent factor | 1.1 | 0.5 | 0.2 | |||||
| Water-demand agents | Amount of water consumption (108m3) | Water-demand prediction | Initial amount of water demand (108 m3) | Other | ||||
|---|---|---|---|---|---|---|---|---|
| Year 2015 | Year 2030 | Year 2015 | Year 2030 | Year 2015 | Year 2030 | |||
| Agricultural agent | 312.50 | 311.66 | | 423.66 | 366.10 | |||
| Domestic agent | 16.20 | 16.16 | | 24.31 | 26.19 | T= 0.17 R = 3.81 × 107 | T= 0.17 R = 4.11 × 107 | |
| Industrial agent | 23.80 | 23.74 | | 29.36 | 46.71 | K= 0.65 | K= 0.50 | |
| Ecological agent | 2.60 | 18.50 | | 17.77 | 18.50 | |||
| Land usage type (year 2015 and 2030) | Agricultural agent | Ecological agent | ||||||
| Rice | Corn | Soybean | Wheat | Other | Forests land | Grassland | Wetland | |
| Land acreage (104hm2) | 384.30 | 772.30 | 248.60 | 7.50 | 20.10 | 2,183.70 | 206.30 | 431.48 |
| Net irrigation quota (m3/hm2) | 4,800 | 800 | 950 | 900 | 1,000 | |||
| Irrigation water use coefficient | 0.7, 0.8 | 0.55, 0.65 | 0.55, 0.65 | 0.55, 0.65 | 0.55, 0.65 | |||
| Per unit area yield (t/hm2) | 5.72 | 4.59 | 1.76 | 2.91 | 6.02 | |||
| Unit-price (104yuan/t) | 0.48 | 0.23 | 0.45 | 0.25 | 6.91 | |||
| Equivalent factor | 1.1 | 0.5 | 0.2 | |||||
Notes:
is the irrigation quota (m3/hm2) for crop s, it is the ratio of net irrigation quota to irrigation and water use coefficient; 
is the industrial production value; Q is the total amount of annual available water resources (m3); T is the national water quota per capita (m3/day); R is the population; 
is the amount of water consumption per 10,000-yuan production value in the study area in 2010 (m3); and k is the industrial water use efficiency.