@article{fdi:010077527,
  title = {{U}rban landscape structure of a fast-growing african city : the case of {N}iamey ({N}iger)},
  author = {{R}ossi, {J}.{P}. and {D}obigny, {G}authier},
  editor = {},
  language = {{ENG}},
  abstract = {{C}ombining multivariable statistics and geostatistics with landscape metrics, we attempted to quantify the spatial pattern of urbanization in the city of {N}iamey, {N}iger. {L}andscape metrics provided local quantification of both landscape composition and physiognomy while the {P}rincipal {C}omponent {A}nalysis ({PCA}) yielded a multivariable summary of the main source of landscape metrics variation across the city. {W}e used the variogram (geostatistics) to analyze the spatial pattern of the {PCA} outcomes and to characterize the associated spatial scales of variation. {I}n {N}iamey, 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 {N}iger {R}iver, to less green zones gathering steel-roofed houses whose density diminished towards the periphery. {T}his concentric structure centered on the {N}iger {R}iver clearly reflected the history of {N}iamey. {PCA} and geostatistics provided appealing quantitative estimates of spatial patterns, scales, anisotropy and intensity of urban structures. {A}lthough these different tools are known in landscape ecology, they are rarely used together. {T}he present paper illustrates how they allow characterizing the marked spatial variation of the urban landscape of the fast-growing {A}frican city of {N}iamey ({N}iger). {S}uch a quantification of the urban landscapes may be extremely useful for future correlative investigations in various fields of research and planning.},
  keywords = {{NIGER} ; {NIAMEY}},
  booktitle = {},
  journal = {{U}rban {S}cience},
  volume = {3},
  numero = {2},
  pages = {art. no 63 [15  + 1 p. h.t.]},
  ISSN = {2413-8851},
  year = {2019},
  DOI = {10.3390/urbansci3020063},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077527},
}