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An approach for combining remote sensing spectral measurements with an ecosystem model was presented in an accompanying article. The sahelian grassland ecosystem STEP model developed for that purpose was also described and validated. In order to fulfill a prerequisite for using coarse resolution ...
Les formes du relief, le sols et la vegetation du secteur de Saye, en zone soudano-sahelienne du Mali Central, ont ete classes en vue d'etablir une base ecologique d'echantillonnage de la phytomasse fourragere. L'interpretation des photographies aeriennes au 50 000 a abouti a la reconnaissance de...
Evaluates relationship between NDVI (nomalized difference vegetation index) and above-ground biomass, between maximum NDVI and end-of-growing season biomass; and between the integral of the NDVI curve or NDVI increments overtime and actual biomass. Describes atmospheric interference and technical...
Compte rendu de la mission CIPEA/NASA de reconnaissance dans la zone pastorale du Niger en vue de developper un programme d'alerte precoce. Propositions d'une typologie phytoecologique des parcours et d'une phase experimentale de developpement d'un systeme d'alerte precoce pastoral.
The West African Sahel rainfall regime is known for its spatio-temporal variability at different scales which has a strong impact on vegetation development. This study presents results of the combined use of a simple water balance model, a radiative transfer model and ERS scatterometer data to ...
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