Redirigiendo al acceso original de articulo en 16 segundos...
Inicio  /  Urban Science  /  Vol: 3 Par: 2 (2019)  /  Artículo
ARTÍCULO
TITULO

Urban Landscape Structure of a Fast-Growing African City: The Case of Niamey (Niger)

Jean-Pierre Rossi and Gauthier Dobigny    

Resumen

Combining multivariable statistics and geostatistics with landscape metrics, we attempted to quantify the spatial pattern of urbanization in the city of Niamey, Niger. Landscape metrics provided local quantification of both landscape composition and physiognomy while the Principal Component Analysis (PCA) yielded a multivariable summary of the main source of landscape metrics variation across the city. We used the variogram (geostatistics) to analyze the spatial pattern of the PCA outcomes and to characterize the associated spatial scales of variation. In Niamey, the main urban structure corresponded to a gradient ranging from highly diversified, fragmented, and both wooded and built-up areas in the city center and along the Niger River, to less green zones gathering steel-roofed houses whose density diminished towards the periphery. This concentric structure centered on the Niger River clearly reflected the history of Niamey. PCA and geostatistics provided appealing quantitative estimates of spatial patterns, scales, anisotropy and intensity of urban structures. Although these different tools are known in landscape ecology, they are rarely used together. The present paper illustrates how they allow characterizing the marked spatial variation of the urban landscape of the fast-growing African city of Niamey (Niger). Such a quantification of the urban landscapes may be extremely useful for future correlative investigations in various fields of research and planning.

 Artículos similares

       
 
Morag Hunter, D. H. Nimalika Perera, Eustace P. G. Barnes, Hugo V. Lepage, Elias Escobedo-Pacheco, Noorhayati Idros, David Arvidsson-Shukur, Peter J. Newton, Luis de los Santos Valladares, Patrick A. Byrne and Crispin H. W. Barnes    
The expansion of copper mining on the hyper-arid pacific slope of Southern Peru has precipitated growing concern for scarce water resources in the region. Located in the headwaters of the Torata river, in the department of Moquegua, the Cuajone mine, own... ver más
Revista: Water

 
Leonardo Seabra Furtado, Raimundo Vitor Santos Pereira and Everaldo Barreiros de Souza    
This work contributes to the studies on landscape mapping induced by human pressure directly related to the urbanization process, whose approach is based on the concept of hemeroby adapted to the metropolitan area of Belém in the eastern Amazon. The mapp... ver más
Revista: Urban Science

 
Riguga Su, Chaobin Yang, Zhibo Xu, Tingwen Luo, Lilong Yang, Lifeng Liu and Chao Wang    
Urban landscape has important effects on urban climate, and the local climate zone (LCZ) framework has been widely applied in related studies. However, few studies have compared the relative contributions of LCZ on the urban thermal environment across di... ver más

 
Yan Fu, Qingwen Qi, Lili Jiang and Yapeng Zhao    
Accurately identifying the patterns of evolution in farmland plays an important role in optimizing farmland management. The aim of this study is to classify the evolution patterns of farmland in China and explore related mechanisms, providing a reference... ver más

 
Anthony Boanada-Fuchs, Monika Kuffer and Jota Samper    
Slums are a structural feature of urbanization, and shifting urbanization trends underline their significance for the cities of tomorrow. Despite their importance, data and knowledge on slums are very limited. In consideration of the current data landsca... ver más
Revista: Urban Science