Multi-objective optimization for sustainable groundwater resource management in a semiarid catchment |
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| Authors: | Y S YANG R M KALIN Y ZHANG X LIN L ZOU |
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| Institution: | 1. School of Civil Engineering, Queen's University of Belfast , Belfast BT7 INN, UK E-mail: ys.yang@qub.ac.uk;2. Department of Hydraulic Engineering , Taiyuan University of Technology , Taiyuan, 030024, China;3. Institute of Environmental Sciences, Beijing Normal University , 19 Xinjiekou Waidajie, Beijing, 100875, China;4. Department of Environmental Engineering , Jilin University , Changchun, 130026, China |
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| Abstract: | Abstract Groundwater is an important water resource and its management is vital for integrated water resources development in semiarid catchments. The River Shiyang catchment in the semiarid area of northwestern China was studied to determine a sustainable multi-objective management plan of water resources. A multi-objective optimization model was developed which incorporated water supplies, groundwater quality, ecology, environment and economics on spatial and temporal scales under various detailed constraints. A calibrated groundwater flow model was supplemented by grey simulation of groundwater quality, thus providing two lines of evidence to use in the multi-objective water management. The response matrix method was used to link the groundwater simulation models and the optimization model. Multi-phase linear programming was used to minimize and compromise the objectives for the multi-period, conjunctive water use optimization model. Based on current water demands, this water use optimization management plan was able to meet ecological, environmental and economic objectives, but did not find a final solution to reduce the overall water deficit within the catchment. |
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| Keywords: | sustainable groundwater management multi-objective optimization conjunctive use groundwater flow groundwater quality mathematical modelling integrated water resources management semiarid zones China |
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