Recours Aux Satellites Pour Appuyer Le Management De L’eau D’irrigation: Estimation Des Besoins En Eau Des Agrumes Par Télédétection Dans La Plaine De Triffa-berkane (maroc)
Year: 2019
Type: article
Abstract: Citrus represent the main irrigated crop in Trifa plain (Berkane, Morocco) and their area are in continuous extension, which increases the pressures on the limited water resources of the region. In this context, effective and rational governance of agricultural water is highly needed. In this study, we propose a satellite based approach to support irrigation water management of citrus in Trifa plain. This approach was developed in two steps: citrus crop coefficient maps were firstly developed from an age-stratified citrus map, derived from Sentinel optical and radar satellite images. Then, a validated implementation of Hargreaves model was used to estimate potential evapotranspiration from Landsat 8 TIRS thermal images. Compared to Penman-Montheith reference model, Hargreaves method estimates accurately potential evapotranspiration, with an error (RMSE) lower than 0.5mm / day. Finlay, the combination of crop coefficient and potential evapotranspiration maps allowed to spatialize the maximum citrus evapotranspiration at the pixel scale (one hectare). This information could be used to assist irrigation services to increase agricultural water productivity in irrigated areas.
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3138624587