Alaya I. auteur aut IRD Zitouna-Chebbi R. auteur aut IRD Mekki I. auteur aut IRD Jacob Frédéric auteur aut IRD text bookSection eng text/pdf born digital access The sustainability of agricultural sector involves a wise water resources management and therefore an accurate spatiotemporal vegetation monitoring with relevant tools such as satellite-derived indices (VI). In this study we evaluate the performance of NDVI and NDWI indices to infer the annual crops' (mainly wheat and faba-bean) aboveground biomass(AGB)at a Mediterranean watershed. The temporal evolution of IV over the annual crops area shows the presence of low-density and low water content vegetation in early and late season. Areas with well-developed canopy and high plant water content are dominant in the mid-season. The observed AGB of wheat and faba-bean shows a good correlation with NDVI and NDWI values (R-2>0.71). The used vegetation indices represent a practical tool to determine the spatiotemporal variation of annual crops' AGB in Lebna watershed, however, a large dataset for validation is needed. specialized TUNISIE 068 098 072 126 326-329 Tunis IEEE 2020 M2GARSS : Mediterranean and Middle-East Geoscience and Remote Sensing Symposium, Tunis (Tunisie), 2020/11/9-11 https://www.documentation.ird.fr/hor/fdi:010083682 10.1109/M2GARSS47143.2020.9105153 978-1-7281-2190-1 [F B010083682] https://www.documentation.ird.fr/hor/fdi:010083682 https://www.documentation.ird.fr/intranet/publi/2022-02/010083682.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2021-12-07 2025-02-24 fdi:010083682 fre