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Water Conservation versus Soil Salinity Control

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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.

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File URL: http://economix.fr/pdf/dt/2012/WP_EcoX_2012-08.pdf
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Bibliographic Info

Paper provided by University of Paris West - Nanterre la Défense, EconomiX in its series EconomiX Working Papers with number 2012-8.

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Length: 30 pages
Date of creation: 2012
Date of revision:
Handle: RePEc:drm:wpaper:2012-8

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

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  1. 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.
  2. Wichelns, Dennis, 1999. "An economic model of waterlogging and salinization in arid regions," Ecological Economics, Elsevier, vol. 30(3), pages 475-491, September.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. Chakravorty, Ujjayant & Umetsu, Chieko, 2003. "Basinwide water management: a spatial model," Journal of Environmental Economics and Management, Elsevier, vol. 45(1), pages 1-23, January.
  8. Barro, Robert J., 1990. "Government Spending in a Simple Model of Endogeneous Growth," Scholarly Articles 3451296, Harvard University Department of Economics.
  9. Gisser, Micha, 1983. "Groundwater: Focusing on the Real Issue," Journal of Political Economy, University of Chicago Press, vol. 91(6), pages 1001-27, December.
  10. 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.
  11. Santiago Rubio & Begoña Casino, 2003. "Strategic Behavior and Efficiency in the Common Property Extraction of Groundwater," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 26(1), pages 73-87, September.
  12. Roseta-Palma, Catarina, 2002. "Groundwater Management When Water Quality Is Endogenous," Journal of Environmental Economics and Management, Elsevier, vol. 44(1), pages 93-105, July.
  13. 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.
  14. Provencher Bill & Burt Oscar, 1993. "The Externalities Associated with the Common Property Exploitation of Groundwater," Journal of Environmental Economics and Management, Elsevier, vol. 24(2), pages 139-158, March.
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