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Dynamic Agro-Economic Modeling for Sustainable Water Resources Management in Arid and Semi-arid Areas

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Abstract

The water resource has become increasingly scarce. This situation will become acute in the future years in Morocco and in other countries of the world. Furthermore, nonrational use of irrigation water resources constitutes a major constraint on agricultural development in Morocco’s watersheds, including the Tadla subbasin. A better valuation and adoption of more water-efficient practices are becoming increasingly necessary, especially in arid and semi-arid regions. Thus, it is essential in these areas to have effective instruments to manage and organize the control and allocation of water resources and ensure their protection and conservation. In this context, the aim of this work is to analyze water resources sustainability in the current context of agricultural policies with estimating the likely changes in water management parameters and in the sensitivity of the agricultural sector to possible external shocks. Given the multidimensional nature of water management, this research presents an integrated agronomic, economic, and hydrological modeling for the Tadla subbasin in Morocco, which classifies agricultural areas according to different sources of irrigation water. To promote the database of this modeling framework and to give a clear idea about the agro-economic system functioning underlying the current water management in the study area, we have characterized Technico-economic efficiency and water valuation through the study of the main agricultural crops in the Tadla region. The characterization of the agro-economic system was followed by a modeling of this system and then by an analysis of water management in the study area. The proposed model is disaggregated by territorial unit, municipalities, water irrigation sources, and crops. This tool allows decision-makers to predict the interannual variations of selected socio-economic indicators of water management according to different scenarios. To test the sensitivity of water valuation to external shocks, we first simulated the impact of an increase in the selling price of irrigation water applied to surface water in the irrigated perimeter of Tadla. Another type of exogenous shocks related to climate change was tested, and we examined their potential impacts on the long-term agricultural water management in the region. Given the results, this research provides a viable modeling framework for sustainable water resources management in order to help decision-makers to improve irrigation water management and mitigate the exogenous shocks effects on the system sustainability in arid and semi-arid areas.

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Correspondence to Hayat Lionboui .

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Lionboui, H., Benabdelouahab, T., Hasib, A., Elame, F., Boulli, A. (2018). Dynamic Agro-Economic Modeling for Sustainable Water Resources Management in Arid and Semi-arid Areas. In: Hussain, C. (eds) Handbook of Environmental Materials Management. Springer, Cham. https://doi.org/10.1007/978-3-319-58538-3_114-1

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  • DOI: https://doi.org/10.1007/978-3-319-58538-3_114-1

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-58538-3

  • Online ISBN: 978-3-319-58538-3

  • eBook Packages: Springer Reference Chemistry and Mat. ScienceReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics

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