[ Comparaison de la végétation herbacée de trois occupations du sol des milieux dunaires du Sud-est Niger: Cas du terroir villageois Guidan Kadji (Maïné-Soroa) ]
Volume 39, Issue 1, March 2023, Pages 109–120
Aboubacar Moustapha Moustapha1, Adamou Didier Tidjani2, Iro Dan Guimbo3, and Ali Akilou Abdoul-Salem4
1 Département de Sciences du Sol, Faculté d’Agronomie, Université Abdou Moumouni BP: 10960 Niamey, Niger
2 Departement of Soil Science, University Abdou Moumouni Niamey, BP 10960, Niger
3 Département de Génie Rural et Eaux & Forêts, Faculté d’Agronomie, Université Abdou Moumouni de Niamey, B.P. 10960 Niamey, Niger
4 Département de Génie Rural et Eaux and Forêts, Faculté d’Agronomie, Université Abou Moumouni de Niamey, B.P. 10960 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.
The Manga located, in the South-East of Niger knows wind erosion. This form of degradation favored the creation of sharp dunes. To remedy this situation, programs to fight against sand dunes are implemented. This study is conducted in Guidan Kadji (Maïné-Soroa). It compares the herbaceous flora of a treated dune that has received manure, a natural course and a living dune in the vicinity of Guidan Kadji. The method of aligned quadrat points was used for the phytosociological study. The treated dune has 24 species, 10 species for the natural course and 3 species for the living dune, the best represented families are the Poaceae with 9 species. Therophytes occupy more than 80% of the gross and weighted spectra. The species. Guineo-Congolese-Sudanese-Zambézian is the dominant phytogeographic type with more than 70% in the gross and weighted spectra. The cover is 4.25%, 71.02% and 95.81% for live dune, treated dune and rangeland respectively. The qualified forage is 1339.65 kg DM/ha or 1.33 T DM/ha for the natural dune versus 703.44 kg DM/ha or 0.70 T DM/ha for the treated dune. It is practically null (2.04 kg DM/ha or 0.002 T DM/ha) on the live dune. Overall, the regularity (>0.60 bits) is high and the Sörensen similarity (>80%) between the treated dune and the natural course is high. This study demonstrated that dune fixation can restore the flora of degraded dune systems, especially if the site is close to residential areas.
Author Keywords: Wind erosion, dune fixation, dune environments, herbaceous flora, diversity, biomass, Niger-Southeast.
Volume 39, Issue 1, March 2023, Pages 109–120
Aboubacar Moustapha Moustapha1, Adamou Didier Tidjani2, Iro Dan Guimbo3, and Ali Akilou Abdoul-Salem4
1 Département de Sciences du Sol, Faculté d’Agronomie, Université Abdou Moumouni BP: 10960 Niamey, Niger
2 Departement of Soil Science, University Abdou Moumouni Niamey, BP 10960, Niger
3 Département de Génie Rural et Eaux & Forêts, Faculté d’Agronomie, Université Abdou Moumouni de Niamey, B.P. 10960 Niamey, Niger
4 Département de Génie Rural et Eaux and Forêts, Faculté d’Agronomie, Université Abou Moumouni de Niamey, B.P. 10960 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
The Manga located, in the South-East of Niger knows wind erosion. This form of degradation favored the creation of sharp dunes. To remedy this situation, programs to fight against sand dunes are implemented. This study is conducted in Guidan Kadji (Maïné-Soroa). It compares the herbaceous flora of a treated dune that has received manure, a natural course and a living dune in the vicinity of Guidan Kadji. The method of aligned quadrat points was used for the phytosociological study. The treated dune has 24 species, 10 species for the natural course and 3 species for the living dune, the best represented families are the Poaceae with 9 species. Therophytes occupy more than 80% of the gross and weighted spectra. The species. Guineo-Congolese-Sudanese-Zambézian is the dominant phytogeographic type with more than 70% in the gross and weighted spectra. The cover is 4.25%, 71.02% and 95.81% for live dune, treated dune and rangeland respectively. The qualified forage is 1339.65 kg DM/ha or 1.33 T DM/ha for the natural dune versus 703.44 kg DM/ha or 0.70 T DM/ha for the treated dune. It is practically null (2.04 kg DM/ha or 0.002 T DM/ha) on the live dune. Overall, the regularity (>0.60 bits) is high and the Sörensen similarity (>80%) between the treated dune and the natural course is high. This study demonstrated that dune fixation can restore the flora of degraded dune systems, especially if the site is close to residential areas.
Author Keywords: Wind erosion, dune fixation, dune environments, herbaceous flora, diversity, biomass, Niger-Southeast.
Abstract: (french)
Le Manga situé, dans le Sud-est Niger connait l’érosion éolienne. Cette forme de dégradation favorisé la création des dunes vives. Pour y remédier, des programmes de lutte contre l’ensablement sont mis en œuvre. Cette étude est conduite à Guidan Kadji (Maïné-Soroa). Elle compare la flore herbacée d’une dune traitée ayant reçu un apport en fumier, un parcours naturel et une dune vive dans les alentours de Guidan Kadji. La méthode des points quadrats alignés a servi à l’étude phytosociologique. La dune traitée compte 24 espèces, 10 espèces pour le parcours naturel et 3 espèces pour la dune vive, les familles les mieux représentées sont les Poacées avec 9 espèces. Les Thérophytes occupent plus de 80% des spectres brut et pondéré. Les espèces. Guinéo-congolaises-soudano-zambéziennes est le type phytogéographique dominant avec plus 70% en spectre brut et pondéré. Le recouvrement est de 4,25%, 71,02% et 95,81% respectivement pour la dune vive, la dune traitée et le parcours naturel. Le fourrage qualifié est 1339,65 kg MS/ha soit 1,33 T MS/ha pour le parcours naturel contre 703,44 kg MS/ha soit 0,70 T MS/ha pour la dune traitée. Elle est pratiquement nulle (2,04 kg MS/ha soit 0,002 T MS/ha) sur la dune vive. Globalement, la régularité (>0,60 bits) est élevée et la similitude de Sörensen (> 80%) entre la dune traitée et le parcours naturel est élevée. Cette étude a démontré que la fixation des dunes permet de restaurer la flore des systèmes dunaire dégradés, surtout si le site est à proximité des zones d’habitation.
Author Keywords: Erosion éolienne, fixation des dunes, milieux dunaires, flore herbacée, diversité, fourrage, Niger-Sud-est.
How to Cite this Article
Aboubacar Moustapha Moustapha, Adamou Didier Tidjani, Iro Dan Guimbo, and Ali Akilou Abdoul-Salem, “Contrast of the herbaceous vegetation of three land uses in the dune environments of southeastern Niger: The case of the Guidan Kadji village land (Maïné-Soroa),” International Journal of Innovation and Applied Studies, vol. 39, no. 1, pp. 109–120, March 2023.
