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Title
Mesures physiques et signatures en télédétection

617
0.0 0.3 0.6 0.0 0.3 0.6 0.0 0.2 0.4 0.0 0.2 0.4
NDVI NDVI NDVI NDVI
and
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WOODY LAYER
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Measured IPAR
Measured IPAR
HERB LAYER
MIXTURE
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Measured IPAR
Measured IPAR
Figure 4: Comparison between the intercepted PAR measured and modeled on the sample plots, (a) millet crop, (b)
bushiand (DB) and bush/grassland (BG) at the begining of the season, (c) grassland, (d) bush/grassland with the
underlaying herb layer, (see text for the model used in each case).