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Evaluation of Ratio-Based Vegetation Indices For Annual Crops’ Biomass Estimation. Lebna Watershed, Capbon, Tunisia

Abstract : 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 (R2 > 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
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https://hal.inrae.fr/hal-02891735
Contributor : Hélène Lesur <>
Submitted on : Tuesday, July 7, 2020 - 9:52:27 AM
Last modification on : Monday, April 19, 2021 - 11:14:02 AM

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Itidel Alaya, Rim Zitouna, I. Mekki, Frédéric Jacob. Evaluation of Ratio-Based Vegetation Indices For Annual Crops’ Biomass Estimation. Lebna Watershed, Capbon, Tunisia. 2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium (M2GARSS), Institute of Electrical and Electronics Engineers; Geoscience and Remote Sensing Society, Mar 2020, Tunis, Tunisia. pp.326-329, ⟨10.1109/M2GARSS47143.2020.9105153⟩. ⟨hal-02891735⟩

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