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

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dc.creatorXu, Gang
dc.creatorDong, Ting
dc.creatorCobbinah, Patrick Brandful
dc.creatorJiao, Limin
dc.creatorSumari, Neema S.
dc.creatorChai, Baohui
dc.creatorLiu, Yaolin
dc.date2021-01-29T07:20:23Z
dc.date2021-01-29T07:20:23Z
dc.date2019-03-27
dc.date.accessioned2022-10-25T08:51:52Z
dc.date.available2022-10-25T08:51:52Z
dc.descriptionAfrica 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.
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dc.identifierGang, 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
dc.identifierhttps://www.suaire.sua.ac.tz/handle/123456789/3370
dc.identifier.urihttp://hdl.handle.net/123456789/91854
dc.publisherJournal of Cleaner Production
dc.subjectUrban expansion
dc.subjectPopulation growth
dc.subjectUrban land density
dc.subjectUrban form
dc.subjectUrban sustainability
dc.subjectAfrica
dc.titleUrban expansion and form changes across African cities with a global outlook: Spatiotemporal analysis of urban land densities
dc.typeArticle

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