Satellite multi-sensor data fusion for soil clay mapping based on the spectral index and spectral bands approaches

Gasmi, A.; /Gomez, Cécile; /Chehbouni, Abdelghani; Dhiba, D.; Elfil, H.

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dc.creator	Gasmi, A.
dc.creator	/Gomez, Cécile
dc.creator	/Chehbouni, Abdelghani
dc.creator	Dhiba, D.
dc.creator	Elfil, H.
dc.date	2022
dc.date.accessioned	2022-04-27T17:37:46Z
dc.date.available	2022-04-27T17:37:46Z
dc.identifier	https://www.documentation.ird.fr/hor/fdi:010084516
dc.identifier	oai:ird.fr:fdi:010084516
dc.identifier	Gasmi A., Gomez Cécile, Chehbouni Abdelghani, Dhiba D., Elfil H.. Satellite multi-sensor data fusion for soil clay mapping based on the spectral index and spectral bands approaches. 2022, 14 (5), p. 1103 [22 p.]
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/169085
dc.description	Integrating satellite data at different resolutions (i.e., spatial, spectral, and temporal) can be a helpful technique for acquiring soil information from a synoptic point of view. This study aimed to evaluate the advantage of using satellite mono- and multi-sensor image fusion based on either spectral indices or entire spectra to predict the topsoil clay content. To this end, multispectral satellite images acquired by various sensors (i.e., Landsat-5 Thematic Mapper (TM), Landsat-8 Operational Land Imager (OLI), Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), and Sentinel2-MultiSpectral Instrument (S2-MSI)) have been used to assess their potential in identifying bare soil pixels over an area in northeastern Tunisia, the Lebna and Chiba catchments. A spectral index image and a spectral bands image are generated for each satellite sensor (i.e., TM, OLI, ASTER, and S2-MSI). Then, two multi-sensor satellite image fusions are generated, one from the spectral index images and the other from spectral bands. The resulting spectral index and spectral band images based on mono-and multi-sensor satellites are compared through their spectral patterns and ability to predict the topsoil clay content using the Multilayer Perceptron with backpropagation learning algorithm (MLP-BP) method. The results suggest that for clay content prediction: (i) the spectral bands' images outperformed the spectral index images regardless of the used satellite sensor; (ii) the fused images derived from the spectral index or bands provided the best performances, with a 10% increase in the prediction accuracy; and (iii) the bare soil images obtained by the fusion of many multispectral sensor satellite images can be more beneficial than using mono-sensor images. Soil maps elaborated via satellite multi-sensor data fusion might become a valuable tool for soil survey, land planning, management, and precision agriculture.
dc.language	EN
dc.subject	spectral index
dc.subject	spectral band
dc.subject	multispectral remote sensing
dc.subject	multi-sensors data fusion
dc.subject	digital soil mapping
dc.subject	clay content
dc.title	Satellite multi-sensor data fusion for soil clay mapping based on the spectral index and spectral bands approaches
dc.type	text