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Apport de la teledetection aerospatiale pour l'a ide à la gestion de la sole canniere reunionnaise.

Abstract : The objective of this thesis is to study the potentialities of remote sensing for sugarcane crop management in Reunion Island. We used a data base of multi-temporal SPOT 4&5 images (2002- 2003) and we set up an hyper-spectral CASI campaign in September 2002. At the same time, we organized ground measurements to follow the evolution of sugarcane biophysical parameters (leaf area, nitrogen rate, fresh biomass) and agronomic parameters (harvests and re-plantings). The results shows that it is possible to estimate leaf area (LAI) using the normalized difference vegetation index (NDVI). We also has highlighted the possibility of estimating the cane yield starting from the vegetation index NDVI calculated at the time of maximum development of the cover. Using the SPOT data, yield estimates, on a field scale, could be improved by combining the growth model Mosicas and leaf area evolution obtained from the SPOT 4&5 images series. The hyper-spectral CASI data give a better estimate of the leaf area and fresh biomass than SPOT 4&5 data, with an estimate of the leaf nitrogen content which is, in phase of maturation, an indicator of sugar concentration. The ability to discriminate sugarcane fields according to their surface (full vegetation, cut or bare soil) has allowed to develop dynamic cartography of the sugarcane fields at the regional scale in near real time : the harvest and the replanting follow-ups.
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https://tel.archives-ouvertes.fr/tel-00489730
Contributor : Yves Bouhin <>
Submitted on : Wednesday, September 21, 2011 - 12:59:39 PM
Last modification on : Monday, April 6, 2020 - 2:44:52 PM

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  • HAL Id : tel-00489730, version 1

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Eric Albert Bappel. Apport de la teledetection aerospatiale pour l'a ide à la gestion de la sole canniere reunionnaise.. Physique [physics]. Université de la Réunion, 2005. Français. ⟨tel-00489730⟩

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