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Utilisation conjointe de la télédétection et de l'enquête de terrain lors des inventaires d'occupation du sol. Recherche méthodologique appliquée au Sahel sud-mauritanien

Abstract : THIS RESEARCH SHOWS USEFULNESS OF SATELLITE IMAGERY AS A GROUND SURVEY AND SAMPLE BASE. AFTER HAVING JUSTIFIED THE CHOICE OF AN UNALIGNED SYSTEMATIC SAMPLING SCHEME TO COLLECT GROUND DATA, WE DESCRIBE SOME OF THE USED TOOLS TO DETERMINE THE NUMBER, SIZE AND SPACE BETWEEN SAMPLE UNITS. AT LAST, BY USING REMOTE SENSING AND AREA FRAME SAMPLING (SPATIAL SAMPLING) IT HAS BEEN POSSIBLE TO IMPROVE THE ACCURACY OF SURFACE ESTIMATION. THE RELATIVE ACCURACY (COEFFICIENT OF VARIATION) HAS INCREASED FROM 46 PER CENT WITHOUT REMOTE SENSING TO 87 PER CENT WITH REMOTE SENSING. EXAMPLES HAVE BEEN TAKEN FROM SOUTH MAURITANIAN SAHEL IN PASTORAL, AGROPASTORAL AND OASIS ZONES.
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https://tel.archives-ouvertes.fr/tel-01024191
Contributor : Laurence Rageot <>
Submitted on : Friday, July 18, 2014 - 11:00:41 AM
Last modification on : Thursday, October 29, 2020 - 3:01:34 PM
Long-term archiving on: : Monday, November 24, 2014 - 1:05:34 PM

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  • HAL Id : tel-01024191, version 1

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Vincent Godard. Utilisation conjointe de la télédétection et de l'enquête de terrain lors des inventaires d'occupation du sol. Recherche méthodologique appliquée au Sahel sud-mauritanien. Géographie. Ecole des Hautes Etudes en Sciences Sociales (EHESS), 1991. Français. ⟨NNT : 1991EHES0066⟩. ⟨tel-01024191⟩

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