Seasonal and interannual variations of NDVI identified from MODIS 250 m in the catchment of Upper Ouémé

The present research aims to study the variability of the NDVI in the step of annual times in the catchment area of Upper Oueme between 2000 and 2015. Vegetation Index data is analysed to highlight the spatial variation time of vegetation. The MODIS 250 m resolution are used to analyse the details of the dynamics from 2000 to 2015. Generally, vegetative activity in the Upper Oueme, declined during the 2000-2015 time series. The spatio-temporal dynamics of vegetation brought together the months of the year, according to homogeneous dynamics. So some months, like those of July-August, are marked by a significant improvement in the vegetation. Others, contrariwise, knows a reverse situation. These are the months from November to February. The Pettit test applied to the series of NDVI MODIS shows that between 2000 and 2015, the data are not homogeneous and that there are dates from which the changes were observed in the data. The year of greater plant production is 2003. As for the year to the smaller plant activity, it corresponds to 2005.