Abstract
For ensuring both optimal sustainable water resources management and long-term planning in a changing arid environment, we propose an integrated Assessment-, Prognoses-, Planning- and Management tool (APPM). The new APPM integrates the complex interactions of the strongly nonlinear meteorological, hydrological and agricultural phenomena, considering the socio-economic aspects. It aims at achieving best possible solutions for water allocation, groundwater storage and withdrawals including saline water management together with a substantial increase of the water use efficiency employing novel optimisation strategies for irrigation control and scheduling. To obtain a robust and fast operation of the water management system, it unites process modeling with artificial intelligence tools and evolutionary optimisation techniques for managing both water quality and quantity. We demonstrate some key components of our methodology by an exemplary application to the south Al-Batinah region in the Sultanate of Oman which is affected by saltwater intrusion into a coastal aquifer due to excessive groundwater withdrawal for irrigated agriculture. We show the effectiveness and functionality of a new simulation-based water management system for the optimisation and evaluation of different irrigation practices, crop pattern and resulting abstraction scenarios. The results of several optimisation runs indicate that due to contradicting objectives, such as profit-oriented agriculture versus aquifer sustainability only a multi-objective optimisation can provide sustainable solutions for the management of the water resources in respect of the environment as well as the socio-economic development.
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Acknowledgments
The manuscript was prepared within the research project IWAS funded by the German Federal Ministry of Education and Research (BMBF) under grant no. 02WM1028. Additionally, we wish to thank the Ministry of Regional Municipalities and Water Resources of the Sultanate of Oman for supporting the IWAS-IWRM project.
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Grundmann, J., Schütze, N., Schmitz, G.H. et al. Towards an integrated arid zone water management using simulation-based optimisation. Environ Earth Sci 65, 1381–1394 (2012). https://doi.org/10.1007/s12665-011-1253-z
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DOI: https://doi.org/10.1007/s12665-011-1253-z