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La region de Maradi dispose d’importantes ressources animales et pastorales. Mais l’extension des terres agricoles et l’accroissement du cheptel entrainent une forte pression sur les pâturages, ressources essentielles pour l’elevage au Sahel. Ainsi, cette etude vise a connaitre l’etat actuel de ces pâturages en les caracterisant en termes de valeur pastorale, de productivite et de capacite de charge. Les donnees ont ete collectees par la methode lineaire de Daget et Poissonet (1971) et la methode de recolte integrale de biomasse. Les resultats montrent que la valeur pastorale des pâturages augmente avec le gradient climatique Sud-Nord tandis que la productivite des pâturages, elle, est plus elevee au Sud et plus faible au Centre de la region. La capacite de charge de tous les pâturages est tres faible mais tres variable entre les zones bioclimatiques, les pâturages du Sud presentant les plus grandes capacites de charge suivis des pâturages du Nord. Ainsi, la faible capacite de charge, l’extension des cultures au detriment des pâturages et l’accroissement du cheptel vont accentuer la degradation de ces ecosystemes saheliens deja fragilises ce qui aura une consequence nefaste sur les performances zootechniques du cheptel et l’economie de la Region. © 2018 International Formulae Group. All rights reserved. Mots cles: Parcours naturels, gradient climatique, valeur pastorale, capacite de charge, Maradi, Sahel English Title: Productivity, pastoral value and carrying capacity of rangeland in the Maradi region, Niger English Abstract The region of Maradi has important animal and pastoral resources. But the extension of agricultural lands and the increase in livestock are putting a lot of pressure on pastures, which are essential breeding resources in the Sahel region. The region of Maradi has important animal and pastoral resources. But the extension of agricultural land and the increase in livestock are putting a lot of pressure on pastures, which are essential  breeding resources in the Sahel. Thus, this study aims at finding out the current state of these pastures by characterizing them in terms of pastoral value, productivity and carrying capacity. The data were collected by the linear method of Daget and Poissonet (1971) and the method of integral harvesting of biomass. The results show that the pastoral value of pastures increases with the South-North climatic gradient while pasture productivity is higher in the South and lower in the Center of the region. The carrying capacity of all pastures is very low but varies a lot across bioclimatic zones, the pastures of the south having the greatest load capacities followed by pastures of the North. Thus, the low carrying capacity, cropland expansion into grasslands and the increase in livestock will intensify the degradation of these already weakened Sahelian ecosystems, which will have a detrimental effect on the zootechnical performance of the livestock and the economy of the region. © 2018 International Formulae Group. All rights reserved. Keywords: Rangeland, climatic gradient, pastoral value, carrying capacity, Maradi, Sahel

Productivité, valeur pastorale et capacité de charge des parcours naturels de la région de Maradi, Niger