Details

Autor(en) / Beteiligte

• Alaya, I.
• Zitouna-Chebbi, R.
• Mekki, I.
• Jacob, F.

Titel

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

Ist Teil von

• 2020 Mediterranean and Middle-East Geoscience and Remote Sensing Symposium (M2GARSS), 2020, p.326-329

Ort / Verlag

IEEE

Erscheinungsjahr

2020

Quelle

IEEE Xplore

Beschreibungen/Notizen

• 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.