Sokoine University of Agriculture

Urban expansion and form changes across African cities with a global outlook: Spatiotemporal analysis of urban land densities

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dc.contributor.author Xu, Gang
dc.contributor.author Dong, Ting
dc.contributor.author Cobbinah, Patrick Brandful
dc.contributor.author Jiao, Limin
dc.contributor.author Sumari, Neema S.
dc.contributor.author Chai, Baohui
dc.contributor.author Liu, Yaolin
dc.date.accessioned 2021-01-29T07:20:23Z
dc.date.available 2021-01-29T07:20:23Z
dc.date.issued 2019-03-27
dc.identifier.citation Gang, X., Dong, T., Cobbinah, B. P., Jiao, L., Sumari, N. S., Chai, B., Liu, Y. (2019). Urban expansion and form changes across Africa cities with a global outlook: Spatiotemporal analysis of urban land densities, Journal of Cleaner Production: https://doi.org/10.1016/j.jclepro.2019.03.276 en_US
dc.identifier.uri https://www.suaire.sua.ac.tz/handle/123456789/3370
dc.description.abstract Africa has been experiencing rapid urbanization, yet limited studies have systematically investigated urban growth dynamics across African cities. Using 25 cities as cases, we quantified urban growth and form changes in Africa via spatiotemporal analysis of urban land densities in concentric rings over three time points (1990, 2000, and 2014). The results show that African cities have rapidly grown both in population and built-up areas, which increased by about 4% and more than 5% per annum, respectively. Urban land density (defined as the proportion of the built-up area to the buildable area) in each concentric ring decreases from the city center to the urban periphery with diverse patterns among cities. Comparatively, small cities have a lower urban land density and a more dispersed urban form than medium-sized and large cities in Africa. The international comparisons between cities with over one million population in Africa, Asia (e.g., China and India), Europe, and North America (i.e., the United States) reveal that African cities have a relatively less compact urban form. Implications of these findings for the future of African cities are further proffered. en_US
dc.publisher Journal of Cleaner Production en_US
dc.subject Urban expansion en_US
dc.subject Population growth en_US
dc.subject Urban land density en_US
dc.subject Urban form en_US
dc.subject Urban sustainability en_US
dc.subject Africa en_US
dc.title Urban expansion and form changes across African cities with a global outlook: Spatiotemporal analysis of urban land densities en_US
dc.type Article en_US
dc.url https://www.sciencedirect.com/science/article/abs/pii/S0959652619309862?via%3Dihub en_US


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