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Water 2016, 8(6), 237; doi:10.3390/w8060237

Optimal Allocation of Water Resources Based on Water Supply Security

1
China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China
2
Nanjing Hydraulic Research Institute, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210029, China
*
Authors to whom correspondence should be addressed.
Academic Editors: Marco Franchini, Y. Jun Xu, Guangxin Zhang and Hongyan Li
Received: 1 March 2016 / Revised: 23 May 2016 / Accepted: 24 May 2016 / Published: 2 June 2016
(This article belongs to the Special Issue Tackling Complex Water Problems in China under Changing Environment)
View Full-Text   |   Download PDF [2386 KB, uploaded 2 June 2016]   |  

Abstract

Under the combined impacts of climate change and human activities, a series of water issues, such as water shortages, have arisen all over the world. According to current studies in Science and Nature, water security has become a frontier critical topic. Water supply security (WSS), which is the state of water resources and their capacity and their capacity to meet the demand of water users by water supply systems, is an important part of water security. Currently, WSS is affected by the amount of water resources, water supply projects, water quality and water management. Water shortages have also led to water supply insecurity. WSS is now evaluated based on the balance of the supply and demand under a single water resources condition without considering the dynamics of the varying conditions of water resources each year. This paper developed an optimal allocation model for water resources that can realize the optimal allocation of regional water resources and comprehensively evaluate WSS. The objective of this model is to minimize the duration of water shortages in the long term, as characterized by the Water Supply Security Index (WSSI), which is the assessment value of WSS, a larger WSSI value indicates better results. In addition, the simulation results of the model can determine the change process and dynamic evolution of the WSS. Quanzhou, a city in China with serious water shortage problems, was selected as a case study. The allocation results of the current year and target year of planning demonstrated that the level of regional comprehensive WSS was significantly influenced by the capacity of water supply projects and the conditions of the natural water resources. The varying conditions of the water resources allocation results in the same year demonstrated that the allocation results and WSSI were significantly affected by reductions in precipitation, decreases in the water yield coefficient, and changes in the underlying surface. View Full-Text
Keywords: water supply security; water supply security index; changing environment; water allocation; Quanzhou water supply security; water supply security index; changing environment; water allocation; Quanzhou
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, J.; Hou, B.; Jiang, D.; Xiao, W.; Wu, Y.; Zhao, Y.; Zhou, Y.; Guo, C.; Wang, G. Optimal Allocation of Water Resources Based on Water Supply Security. Water 2016, 8, 237.

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