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Water Conservation versus Soil Salinity Control

Author

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  • Alain Ayong Le Kama
  • Agnès Tomini

Abstract

This paper tackles the increasingly significant problem of irrigation-induced soil salinity within a groundwater management model. Irrigation can result not only in heavier salt concentrations, but also in the removal of salt from the soil through return flows. Given these contradictory observations, we are interested in the effects on soil salt concentration if irrigation efficiency is improved. We develop a model of salt concentration patterns in both soil and groundwater. We introduce a negative externality to the production process by assuming that soil degradation due to higher soil salinity affects total factor productivity. Within this framework, we show that in the presence of this externality, increasing irrigation efficiency can lead to higher or lower soil salt concentration, depending on the social cost of transferring salt from one reservoir to another.

Suggested Citation

  • Alain Ayong Le Kama & Agnès Tomini, 2012. "Water Conservation versus Soil Salinity Control," EconomiX Working Papers 2012-8, University of Paris Nanterre, EconomiX.
  • Handle: RePEc:drm:wpaper:2012-8
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    References listed on IDEAS

    as
    1. Frank M. Gollop & Gregory P. Swinand, 1998. "From Total Factor to Total Resource Productivity: An Application to Agriculture," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 80(3), pages 577-583.
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    3. Phoebe Koundouri, 2004. "Current Issues in the Economics of Groundwater Resource Management," Journal of Economic Surveys, Wiley Blackwell, vol. 18(5), pages 703-740, December.
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    5. Santiago Rubio & Begoña Casino, 2003. "Strategic Behavior and Efficiency in the Common Property Extraction of Groundwater," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 26(1), pages 73-87, September.
    6. Barro, Robert J, 1990. "Government Spending in a Simple Model of Endogenous Growth," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages 103-126, October.
    7. Steven S. Vickner & Dana L. Hoag & W. Marshall Frasier & James C. Ascough, 1998. "A Dynamic Economic Analysis of Nitrate Leaching in Corn Production under Nonuniform Irrigation Conditions," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 80(2), pages 397-408.
    8. Burness, H. Stuart & Brill, Thomas C., 2001. "The role for policy in common pool groundwater use," Resource and Energy Economics, Elsevier, vol. 23(1), pages 19-40, January.
    9. Bill Provencher, 1993. "A Private Property Rights Regime to Replenish a Groundwater Aquifer," Land Economics, University of Wisconsin Press, vol. 69(4), pages 325-340.
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    12. Douglas M. Larson & Gloria E. Helfand & Brett W. House, 1996. "Second-Best Tax Policies to Reduce Nonpoint Source Pollution," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 78(4), pages 1108-1117.
    13. Moreaux, Michel & Reynaud, Arnaud, 2006. "Urban freshwater needs and spatial cost externalities for coastal aquifers: A theoretical approach," Regional Science and Urban Economics, Elsevier, vol. 36(2), pages 163-186, March.
    14. Wichelns, Dennis, 1999. "An economic model of waterlogging and salinization in arid regions," Ecological Economics, Elsevier, vol. 30(3), pages 475-491, September.
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    More about this item

    Keywords

    Groundwater Management; Optimal Control of Water Consumption; Soil Salinity;

    JEL classification:

    • Q24 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Land
    • Q25 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Water
    • C61 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Optimization Techniques; Programming Models; Dynamic Analysis
    • D61 - Microeconomics - - Welfare Economics - - - Allocative Efficiency; Cost-Benefit Analysis

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