| Calculation and analysis on water footprint of main crops in Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2014.06.033 |
| Key Words: water footprint of production crop blue water green water grey water Penman Equation Xinjiang |
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| Abstract: |
| From the perspective of water footprint of crop production, based on Penman Equation and CROPWAT software, was analyzed the water footprint of major crops production in 13 regions of Xinjiang in 2011. The results showed that: The cotton water requirements per unit area and unit mass were 8 650 m3·hm-2 and 4.82 m3·kg-1, respectively, which is total large than the water requirements of wheat and corn, it is the maximal water consumption crop among the three crops. The water requirements of major crops in Xinjiang were mainly relied on blue water. Among them, the proportion of blue water for cotton was the highest, reached 93.31%, the maximal use of blue water was in the southern areas of Xinjiang. Meanwhile, the water footprint of major crops in whole Xinjiang was 2 049.31×107 m3 in 2011, among them, the blue water footprint was 1 651.65×107 m3, green water footprint was 186.88×107 m3, and grey water footprint was 210.78×107 m3. The total amount of water footprint of crop production in Bazhou, Aksu, Kashgar was bigger, which were the main regions for water resources control and government. So for the Xinjiang with water resources shortage, reasonably adjust the agricultural crop planting structure and reduce the application of chemical fertilizer, it is an effective measure to carry out the strictest water resources management institution. |
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