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| DOI：10.13522/j.cnki.ggps.20190188 |
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| Analysis of Water Footprint and Water Consumption Structure of Major Crops in Hebei Province |
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HAN Yuping, QU Chang, JIA Dongdong
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1. School of Water Conservancy, North China University of Water Resources and ElectricPower, Zhengzhou 450046, China; 2. Collaborative Innovation Center of Water Resources Efficient Utilization and Support Engineering, Zhengzhou 450046, China;3. Henan Key Laboratory of Water Environment Simulation and Treatment, Zhengzhou 450046, China
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| Abstract: |
| 【Objective】This paper aims to adjust the regional agricultural planting structure, make rational use of regional agricultural water resources,【Method】in this study, the total water footprint and its historical trends of 14 main crops from 1957 to 2015 in Hebei province of northern China were analyzed based on the traditional water footprint calculation framework. All of the 14 crops were classified based on the unit water footprint and price index per unit of water.【Result】The average annual total water footprint of major crops in Hebei province was 43.44 billion m3. The blue water, green water and grey water accounted for 44%, 42%, and 14%, respectively. The total water footprint, green water footprint, and grey water footprint all had increasing trends, however the total blue water footprint had not significant trend. Winter wheat, summer maize, fruits and vegetables accounted for a larger proportion of the total water footprint. For individual crops, cotton and sesame had the highest water consumption rate, which were typical high water-consuming crops. The unit water value of beet, vegetable and fruit is the highest, and the water consumption structure was best.【Conclusion】It was pointed out that the sown area of cotton and sesame can be further controled, and the scale of fruits and vegetables which under the premise of not causing water pressure should be expanded, so as to meet the agricultural water-saving and water-adaptive development in Hebei and promote the implementation of the national strategy of integration of Beijing, Tianjin and Hebei. |
| Key words: crop water; footprint; water consumption rate; unit water value; planting structure adjustment |
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