[ Variabilité pluviométrique et mise en valeur des bas-fonds dans le bassin versant de Gomba Haoussa (Sud-Zinder au Niger) ]
Volume 66, Issue 1, April 2023, Pages 144–149
Abdou Bagna Amadou1
1 Département de Géographie, Université Abdou Moumouni, Ecole Normale Supérieure, BP 10963, Niamey, Niger
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In the Sahel, rainfall is the fundamental climatic element that conditions the various agricultural activities. Their absence, scarcity, excess or poor spatial and temporal distribution are generators of food crises. In Niger, as in most Sahelian countries, climatic crises are recurrent and expose the country to chronic food deficits. As a result, producers resort to lowlands to mitigate rainfed food deficits. This study aims to analyze the climatic variability in the Gomba Haoussa watershed, and to reveal the rainfall and socio-economic trends of the exploitation of the lowlands. The climatic diagnosis was made from the Pettitt test (1979) on the Magaria series from 1950 to 2015. The field surveys in five sampled lowlands, involved 80 producers. The results show longer dry periods, thus making the rainfed agricultural production system more vulnerable. These changes translate to producers using lowlands for agricultural development.
Author Keywords: Gomba Hausa, rainfall variability, lowlands, adaptation.
Volume 66, Issue 1, April 2023, Pages 144–149
Abdou Bagna Amadou1
1 Département de Géographie, Université Abdou Moumouni, Ecole Normale Supérieure, BP 10963, Niamey, Niger
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
In the Sahel, rainfall is the fundamental climatic element that conditions the various agricultural activities. Their absence, scarcity, excess or poor spatial and temporal distribution are generators of food crises. In Niger, as in most Sahelian countries, climatic crises are recurrent and expose the country to chronic food deficits. As a result, producers resort to lowlands to mitigate rainfed food deficits. This study aims to analyze the climatic variability in the Gomba Haoussa watershed, and to reveal the rainfall and socio-economic trends of the exploitation of the lowlands. The climatic diagnosis was made from the Pettitt test (1979) on the Magaria series from 1950 to 2015. The field surveys in five sampled lowlands, involved 80 producers. The results show longer dry periods, thus making the rainfed agricultural production system more vulnerable. These changes translate to producers using lowlands for agricultural development.
Author Keywords: Gomba Hausa, rainfall variability, lowlands, adaptation.
Abstract: (french)
Au Sahel, les précipitations représentent l’élément climatique fondamental qui conditionne les différentes activités agricoles. Leur absence, rareté, excès ou mauvaise répartition spatio-temporelle sont générateurs des crises alimentaires. Au Niger, comme dans la plupart des pays sahéliens, les crises climatiques sont récurrentes et exposent le pays à des déficits alimentaires chroniques. Dès lors, les producteurs ont recours aux bas-fonds afin d’atténuer les déficits alimentaires liés aux cultures pluviales. Cette étude a pour objectif d’analyser la variabilité climatique dans le bassin versant de Gomba Haoussa, et de dégager les tendances pluviométriques et socio-économiques de l’exploitation des bas-fonds. Le diagnostic climatique a été fait à partir du test de Pettitt (1979) sur la série de Magaria allant de 1950 à 2015. Les enquêtes de terrain dans cinq bas-fonds échantillonnés ont concerné 80 producteurs et les résultats obtenus montrent des périodes sèches plus longues, rendant ainsi plus vulnérable le système de production agricole pluviale. Ces changements se traduisent chez les producteurs par le recours aux bas-fonds pour des mises en valeur agricoles.
Author Keywords: Gomba Haoussa, variabilité pluviométrique, bas-fonds, adaptation.
How to Cite this Article
Abdou Bagna Amadou, “Rainfall variability and lowland development in the Gomba Haoussa watershed (Southern Zinder, Niger),” International Journal of Innovation and Scientific Research, vol. 66, no. 1, pp. 144–149, April 2023.
