Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Sustainability of irrigated farming systems in a Tunisian region: A recursive stochastic programming analysis
Year:2012
Research Areas
  • Agriculture,
  • Agricultural economics
Information
Abstract
The aim of this study was to evaluate the sustainability of farm irrigation systems in the Cébalat district in northern Tunisia. It addressed the challenging topic of sustainable agriculture through a bio-economic approach linking a biophysical model to an economic optimisation model. A crop growth simulation model (CropSyst) was used to build a database to determine the relationships between agricultural practices, crop yields and environmental effects (salt accumulation in soil and leaching of nitrates) in a context of high climatic variability. The database was then fed into a recursive stochastic model set for a 10-year plan that allowed analysing the effects of cropping patterns on farm income, salt accumulation and nitrate leaching. We assumed that the long-term sustainability of soil productivity might be in conflict with farm profitability in the short-term. Assuming a discount rate of 10% (for the base scenario), the model closely reproduced the current system and allowed to predict the degradation of soil quality due to long-term salt accumulation. The results showed that there was more accumulation of salt in the soil for the base scenario than for the alternative scenario (discount rate of 0%). This result was induced by applying a higher quantity of water per hectare for the alternative as compared to a base scenario. The results also showed that nitrogen leaching is very low for the two discount rates and all climate scenarios. In conclusion, the results show that the difference in farm income between the alternative and base scenarios increases over time to attain 45% after 10 years.
International
Si
JCR
Si
Title
Computers And Electronics in Agriculture
ISBN
0168-1699
Impact factor JCR
1,846
Impact info
Volume
http://dx.doi.org/10.1016/j.compag.2012.02.016
Journal number
86
From page
100
To page
110
Month
SIN MES
Ranking
Participants
  • Autor: H. Belhouchette
  • Autor: Maria Blanco Fonseca (UPM)
  • Autor: J. Wery
  • Autor: G. Flichman
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Economía Agraria y Gestión de los Recursos Naturales
  • Centro o Instituto I+D+i: Centro de Estudios e Investigación para la Gestión de Riesgos Agrarios Medioambientales (CEIGRAM)
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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