The general greening trend observed in this study agrees well with other studies suggesting a drought recovery in the Sahel after 1985. This study points at increased rainfall as the main cause of the Sahel greening, and that the greening probably has been curbed by other factors in a larger part of the Sahel. The large greening up found by analysing the trend of NDVI and NPP (large map) only partly coincide with areas also showing increases in RUE (small figure).

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