Nassah H., Er-Raki S., Fakir Y., Simonneaux Vincent, Diarra A., Khabba S., Chehbouni A. (2022). Mapping deep percolation using remote sensing over an irrigated area in the Haouz plain (Marrakech, Morocco). Acta Horticulturae, 1335, 371-379. International Symposium on Irrigation of Horticultural Crops, 9., Matera (ITA), 2019/06/17-20. ISSN 0567-7572.
Titre du document
Mapping deep percolation using remote sensing over an irrigated area in the Haouz plain (Marrakech, Morocco)
Année de publication
2022
Auteurs
Nassah H., Er-Raki S., Fakir Y., Simonneaux Vincent, Diarra A., Khabba S., Chehbouni A.
Source
Acta Horticulturae, 2022,
1335, 371-379 ISSN 0567-7572
Colloque
International Symposium on Irrigation of Horticultural Crops, 9., Matera (ITA), 2019/06/17-20
This study aims to estimate the spatial deep percolation (DP) by combining remote sensing data and SAMIR (SAtellite Monitoring of IRrigation) tool. In this study, DP was derived as the residual component of water balance in the root zone.
The Indirect computation of water balance requires climate data (reference evapotranspiration (ET0) and rainfall), land cover, crop coefficient derived from normalized difference vegetation index (NDVI), and hydrodynamic soil parameters
like soil moisture at field capacity and the wilting point. The main water balance component is evapotranspiration. It is spatialized based on the FAO-56 approach and the relationship between crop coefficient and NDVI. This approach was tested
over an irrigated area in the Haouz plain during the agricultural period (2011-2012). The results showed that DP followed water supply fluctuations (sum of rainfall and irrigation provided by the manager, ORMVAH). High DP values are observed
during heavy rainfall in March (around 36, 27, and 20 mm) for sugar beet, wheat, and olive trees, respectively. However, from April to June, the vegetation cover was exposed to high water stress for the rest of the season mainly due to the mismatch of water supply.
Plan de classement
Hydrologie [126TELAPP04]
;
Cartographie [128CARTO]
Localisation
Fonds IRD [F B010092431]
Identifiant IRD
fdi:010092431
