Relation Acacia cyanophylla (Lindl) - vegetation herbacee en conditions paturees (Tunisie du Nord-Ouest)

acacia saligna canopy carga ganadera clima mediterraneo conduite des herbages conservation des sols couvert cubierta de copas cubierta vegetal fertilisation fertilizer application grassland management grazing growth rate herbaceous plants manejo de praderas mediterranean climate pastizales pastoreo pastures plant cover productividad productivity soil conservation stocking density taux de charge taux de croissance