Journal of
Geography and Regional Planning

  • Abbreviation: J. Geogr. Reg. Plann.
  • Language: English
  • ISSN: 2070-1845
  • DOI: 10.5897/JGRP
  • Start Year: 2008
  • Published Articles: 385

Full Length Research Paper

Dynamics of a third world city: Case of Niamey, Niger

Salamatou Abdourahamane Illiassou*
  • Salamatou Abdourahamane Illiassou*
  • Departement de Biologie, Faculte des Sciences et Techniques, Universite Dan DickoDankoulodode Maradi, BP: 465 Maradi, Niger.
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Abdoulaye Diouf
  • Abdoulaye Diouf
  • Departement des Sciences du Sol et de Teledetection, Faculte d'Agronomie et des Sciences de l'Environnement, Universite Dan DickoDankoulodode Maradi, BP 465 Maradi, Niger.
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Boubacar Moussa Mamoudou
  • Boubacar Moussa Mamoudou
  • Laboratoire GarbaMounkaila, Departement de Biologie, Faculte des Sciences et Techniques, Universite Abdou Moumouni de Niamey, BP: 10662 Niamey, Niger.
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Abou-Soufianou Sadda
  • Abou-Soufianou Sadda
  • Departement des Sciences du Sol et de Teledetection, Faculte d'Agronomie et des Sciences de l'Environnement, Universite Dan DickoDankoulodode Maradi, BP 465 Maradi, Niger.
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Ali Mahamane
  • Ali Mahamane
  • Departement de Biologie, Faculte des Sciences et Techniques. Universite de Diffa, BP 78, Diffa, Niger
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Mahamane Saadou
  • Mahamane Saadou
  • Departement de Biologie, Faculte des Sciences et Techniques, Universite Dan DickoDankoulodode Maradi, BP: 465 Maradi, Niger.
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  •  Received: 18 March 2015
  •  Accepted: 08 May 2015
  •  Published: 31 May 2015

Abstract

Urbanization is a landscape transformation process that is manifested by spatial expansion relative to human development. The present study aimed at the characterization of the spatio-temporal dynamics of Niamey city over the past 38 years (1975-2013) through a diachronic analysis of Lands at satellite images and application of landscape ecology principles. It sought to: (i) analyze the spatiotemporal pattern of land use land cover change of Niamey city and (ii) identify the driving forces for the land use land cover change in Niamey and their implications. Thirteen LULC classes were identified and grouped into three broad categories namely “Built-up area”, “Agricultural zone” and “Vegetation area”. The “Agricultural zone”, more specifically the class "Rain-fed farmland" represent the landscape matrix (over 37% of the landscape) throughout the period considered for the study. “Built-up area” dominated by “suburb quarter” experienced its lowest expansion rate during the interim period T2 (1989-1999).Analysis of the landscape spatial structure and configuration revealed that the landscape is fragmentation and highly heterogeneous. In general, urbanization in Niamey could be characterized by progressive densification and sprawl along communication lines.

Key words: Urban dynamics, landscape indices, remote sensing, Niamey, land use land cover.