Agritrop
Accueil

Failure of inland valleys development: A hydrological diagnosis of the Bankandi valley in Burkina Faso

Yira Yacouba, Bossa Aymar Yaovi, Keïta Amadou, Fusillier Jean-Louis, Serpantié Georges, Yameogo Thomas B., Idrissou Mouhamed, Lidon Bruno. 2019. Failure of inland valleys development: A hydrological diagnosis of the Bankandi valley in Burkina Faso. Modeling Earth Systems and Environment, 5 (4) : 1733-1741.

Article de revue ; Article de recherche ; Article de revue à comité de lecture
[img] Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
599054.pdf

Télécharger (759kB)

Résumé : Several developed inland valleys for rice production were abandoned due to poor design or implementation. The Bankandi inland valley (BIV) is a contour bunds system developed in 2006 by a development project, currently experiencing a systematic waterlogging. This study assessed: (1) the waterlogging vs. changing hydro-climatic conditions relationship; (2) the hydrological design and implementation of water control infrastructures; and (3) how digital elevation models (DEMs) data could be used for inland valleys development. To investigate the waterlogging vs. changing hydro-climatic conditions (precipitation and discharge), the conceptual HBV model was applied; coupled with break and trend detections tests. To evaluate the accuracy of the location of drainage flume and contour bunds, a topographic survey using a D-GPS was performed. To explore free DEMs as support tool in the development of inland valley, the Shuttle Radar Topography Mission 1 and the Advanced Spaceborne Thermal Emission and Reflection Radiometer 1, were used. The results show that: (1) the waterlogging was not related to changing environmental conditions; (2) major flaws including bunds not implemented on contour lines contribute to the waterlogging; (3) free DEMs were not accurate enough for valley development. The overall diagnostic of BIV entails conducting basic hydrological investigations prior to implementation.

Mots-clés Agrovoc : hydrologie, Engorgement du sol, bilan hydrique, ouvrage hydraulique, vallée, gestion des eaux, télédétection

Mots-clés géographiques Agrovoc : Burkina Faso

Mots-clés libres : Inland valley, Topographic survey, Waterlogging, Remote Sensing, HBV

Classification Agris : P10 - Ressources en eau et leur gestion
P11 - Drainage

Champ stratégique Cirad : CTS 5 (2019-) - Territoires

Auteurs et affiliations

  • Yira Yacouba, CNRST (BFA) - auteur correspondant
  • Bossa Aymar Yaovi, WASCAL (BFA)
  • Keïta Amadou, 2IE (BFA)
  • Fusillier Jean-Louis, CIRAD-ES-UMR G-EAU (FRA)
  • Serpantié Georges, IRD (FRA)
  • Yameogo Thomas B., WASCAL (BFA)
  • Idrissou Mouhamed, Universität Bonn (DEU)
  • Lidon Bruno, CIRAD-ES-UMR G-EAU (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/599054/)

Voir la notice (accès réservé à Agritrop) Voir la notice (accès réservé à Agritrop)

[ Page générée et mise en cache le 2024-01-29 ]