Optimal Allocation of Agricultural Water Resources Based on Virtual Water Subdivision in Shiyang River Basin

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• 作者：Xiaoling Su (1)
  Jianfang Li (2)
  Vijay P. Singh (3)
  
• 关键词：Virtual water ; Blue water ; Green water ; Agricultural water resources optimal allocation ; Shiyang River basin
• 刊名：Water Resources Management
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：28
• 期：8
• 页码：2243-2257
• 全文大小：
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• 作者单位：Xiaoling Su (1)
  Jianfang Li (2)
  Vijay P. Singh (3)
  
  1. College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, 712100, China
  2. Huizhou City Huayu Water Resources and Hydropower Engineering investigation Co., Ltd, Huizhou, 516003, China
  3. Department of Biological & Agricultural Engineering, and Zachry Department of Civil Engineering, Texas A & M University, College Station, TX, 77843-2117, USA
  
• ISSN：1573-1650

文摘

Without subdividing into blue and green virtual water, the virtual crop water is currently used in the allocation of water resources based on virtual water strategy. In order to improve agricultural water use efficiency and the proportion of green water utilization, a multi-objective optimal allocation model for agricultural water resources is developed in this study. The model is based on the subdivision of virtual water into blue and green virtual water, subject to three objectives of the maximum net benefit from agriculture, the minimum fairness difference in the utilization of water, and the maximum proportion of green water utilization. Taking Shiyang River basin as an example, agricultural water resources are optimized through regional virtual water trade in the basin. Results show that compared with the situation in the year 2007, the net benefit of agriculture, the fairness difference in the utilization of water, and the proportion of green water utilization are optimized. At the same time, the planting ratio of food crops, such as corn, reduces, while the planting ratio of cash crops, such as cotton, vegetables, and fruits, increases. Through regional virtual water strategy in the basin, with the crops of different districts having comparative advantages, the proportion of green water utilization and the blue water use efficiency are improved. The study provides a scientific basis to solve the water shortage problem in the basin.