%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Alaya, I.
%A Zitouna-Chebbi, R.
%A Mekki, I.
%A Jacob, Frédéric
%T Evaluation of ratio-based vegetation indices for annual crops' biomass estimation : Lebna watershed, Capbon, Tunisia
%B 2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium (M2GARSS)
%C Tunis
%D 2020
%L fdi:010083682
%G ENG
%I IEEE
%@ 978-1-7281-2190-1
%K TUNISIE
%K MEDITERRANEEN BASSIN ; LEBNA BASSIN VERSANT
%M ISI:000604612500074
%P 326-329
%R 10.1109/M2GARSS47143.2020.9105153
%U https://www.documentation.ird.fr/hor/fdi:010083682
%> https://www.documentation.ird.fr/intranet/publi/2022-02/010083682.pdf
%W Horizon (IRD)
%X 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.
%B M2GARSS : Mediterranean and Middle-East Geoscience and Remote Sensing Symposium
%8 2020/11/9-11
%$ 068 ; 098 ; 072 ; 126