Abstract
ABSTRACT Informal Sector Activities (ISAs) dominate the economy in most African cities, and they continue to proliferate without consideration for environmental sustainability. This study analysed spatial ordering of ISAs in four Nigerian cities, selected for their differential urban forms and social practices. The study assessed the conformity of the spatial ordering of ISAs with industrial location principles, the implications of urban spatial form and government/policy makers’ awareness of environmental consequences of ISAs spatial ordering. The ISAs were identified, classified and sampled, and their GPS coordinates were used in mapping the ISAs on Landsat images in an ArcGIS environment. Findings show that the existing ISAs do not conform to locational principles. Poor governance and environmental awareness of policy/decision makers explains the poor spatial ordering of ISAs.
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