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| Application of CPSP model to agricultural water management in well irrigation region in North China |
| Peng Zhigong1,2, Liu Yu1,2, Xu Di1,2, Wang Lei1,2, Zhang Baozhong1,2 |
| 1. State Key Laboratory of Simulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China; 2. National Center of Efficient Irrigation Engineering and Technology Research-Beijing, Beijing 100048, China |
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Abstract In order to study the variation of the regional water use and the water consumption under different water resources management measures, the CPSP model was selected as the regional water balance analysis tool in Beijing Daxing county. The regional water resources consumption, the regional water withdrawals and the water situation indicators were analyzed under different water management measures such as high water use efficiency, deficit irrigation, good crop structure and water resources importation, et al. The results show that, for water shortage region, the pressure of water resources shortage could be alleviated under different water management measures, such as high water use efficiency, deficit irrigation and improved crop structure. Especially, the quality of water withdrawals and water consumption could be decreased apparently under the deficit irrigation and the improved crop structure. Meanwhile, the proportion of surface water resources and groundwater resources recharge from returned water would be reduced. In a word, once the effective water resources management measures are put into use, it would be benefited to ease the pressure of the regional water shortage and reduce the risk of being polluted by the returned water. In addition, with the rapid economic development and the continuous population growth, the water use quantity will be increased sharply, which would cause the worse contradiction between supply and demand of water resource. To assure the vir-tuous cycle of water resources, the effective water resources management measures should be put into use such as high water use efficiency, good crop structure and water resources importation et al.
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Received: 18 February 2013
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