Open Access

Tab 1

Dynamiques du recouvrement arboré (1964-2002/2006) dans les vallées Aït Bou Guemez et Aït Bou Oulli (d’après Hammi et al., 2007 ; Leguet, 2008 ; Aubert, 2010).

  Aït Bou Oulli (1964-2006)  Aït Bou Guemez (1964-2002) 
Surfaces forestières 15 147 ha 100 % 5 755 ha 100 %
Surfaces déforestées 474 ha 3,1 % 1 192 ha 20,7 %
Forêts en perte de densité 4 516 ha 29,8 % 1 227 ha 21,3 %
Surface forestière stable 8 003 ha 52,7 % 2 091 ha 36,3 %
Forêts en gain de densité 113 ha 0,7 % 1 232 ha 21,4 %
Non évalué
Perte de couvert forestier moyen
2 048 ha 13,5 %
– 20 %
0 ha 0 %
– 10 %

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