The objective of this study is to characterize the current status of woody species in agrosystems and to identify ecologically important woody species that favor agriculture-livestock integration in the context of strong anthropic pressures in the Maradi region. The ground forest inventory method was used to characterize woody vegetation in three sites in the departments of Dakoro (north), Guidan Roumdji (center) and Madarounfa (south). A total of 187 plots were installed, each with a surface area of 2500m². Data collected included species list, total height, diameter at 1.30m from the ground and both perpendicular diameters of the crown, and natural regeneration of woody species. The results show that the southern zone has more species (17) divided into 9 families, followed by the central zone with 16 species and 12 families and finally the northern zone with 9 species and 7 families. The diversity decreases from the south (3.01 bites), center (2.27) and north (1.76 bites). As for the dendrometric parameters, the difference is significant (P ˂ 0.000) with greater values of average height, diameter at 1.30 m from the ground and basal area of the trees in the southern area. It is not significant between ecological zones the basal area of trees (P = 0.9). Faidherbia albida and Piliostigma reticulatum were the most ecologically important species distributed in all three zones. The overall diameter class and height structure imputed by the dominant species shows a negative skewed distribution of the disturbed stand in all three ecological zones. Regeneration is 747±65 (ft/ha), 2136±177 (ft/ha), and 1018±63 (ft/ha) in the north, center, and south, respectively, with a highly significant difference (P=0.000). This regeneration is an important source for re-greening the fields if maintained. This study provides important results that can be used to refine the management of agroforestry parks for various ecosystem services for the benefit of populations.