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The Evolution of Built-up Areas in Ghana since 1975

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  • Fafchamps,Marcel
  • Shilpi,Forhad J.

Abstract

This paper uses high-resolution satellite data on the proportion of buildings in a 250x250 meter cell to study the evolution of human settlement in Ghana over a 40-year period. The analysis finds a strong increase in built-up area over time, mostly concentrated in the vicinity of roads, and also directly on the coast. There is strong evidence of agglomeration effects in the static sense -- buildup in one cell predicts buildup in a nearby cell -- and in a dynamic sense -- buildup in a cell predicts buildup in that cell later on, and an increase in buildup in nearby cells. These effects are strongest over a radius of 3 to 15 kilometers. No evidence is found that human settlements are spaced more or less equally over the landscape or along roads. By fitting a transition matrix to the data, this paper predicts a sharp increase in the proportion of the country that is densely built-up by the middle and end of the century, but there is no increase in the proportion of partially built-up locations.

Suggested Citation

  • Fafchamps,Marcel & Shilpi,Forhad J., 2020. "The Evolution of Built-up Areas in Ghana since 1975," Policy Research Working Paper Series 9314, The World Bank.
  • Handle: RePEc:wbk:wbrwps:9314
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    File URL: http://documents.worldbank.org/curated/en/272701593624763184/pdf/The-Evolution-of-Built-up-Areas-in-Ghana-since-1975.pdf
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    References listed on IDEAS

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    Keywords

    Hydrology; Transport Services; Food Security; International Trade and Trade Rules;

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