Sustainability of irrigated farming systems in a Tunisian region: A recursive stochastic programming analysis
| Autor: | Maria Blanco, Jacques Wery, Hatem Belhouchette, G. Flichman |
|---|---|
| Přispěvatelé: | Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM), Universidad Politécnica de Madrid (UPM), Fonctionnement et conduite des systèmes de culture tropicaux et méditerranéens (UMR SYSTEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Irrigation
[SDV]Life Sciences [q-bio] Farm income 0207 environmental engineering Context (language use) 02 engineering and technology Agricultural engineering METHODE D'IRRIGATION Horticulture TUNISIA IRRIGATION Sustainable agriculture Leaching (agriculture) AIDE A LA DECISION 020701 environmental engineering TUNISIE 2. Zero hunger business.industry Agricultura Environmental engineering Forestry 04 agricultural and veterinary sciences 15. Life on land SYSTEME DE PRODUCTION DECISION SUPPORT Soil quality FARMING SYSTEM Computer Science Applications IRRIGATION METHODS 13. Climate action Agriculture Sustainability 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science business Agronomy and Crop Science |
| Zdroj: | Computers and Electronics in Agriculture Computers and Electronics in Agriculture, Elsevier, 2012, 86, pp.100-110. ⟨10.1016/j.compag.2012.02.016⟩ Computers And Electronics in Agriculture, ISSN 0168-1699, 2012-08, Vol. 86 Archivo Digital UPM Universidad Politécnica de Madrid |
| ISSN: | 0168-1699 |
| DOI: | 10.1016/j.compag.2012.02.016⟩ |
| Popis: | International audience; 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 con- flict 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 apply- ing 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 scenar- ios increases over time to attain 45% after 10 years. |
| Databáze: | OpenAIRE |
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