The Evolution of Built-Up Areas in Ghana since 1975

This paper uses high-resolution satellite data on the proportion of buildings in a 250*250 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 dir...

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Bibliographic Details
Main Author: Fafchamps, Marcel
Other Authors: Shilpi, Forhad
Format: eBook
Language:English
Published: Washington, D.C The World Bank 2020
Series:World Bank E-Library Archive
Online Access:
Collection: World Bank E-Library Archive - Collection details see MPG.ReNa
Description
Summary:This paper uses high-resolution satellite data on the proportion of buildings in a 250*250 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
Physical Description:55 pages