Patterns of stream channel response to urbanization in the humid tropics and their implications for urban land use planning: a case study from southwestern Nigeria
1989; Elsevier BV; Volume: 9; Issue: 4 Linguagem: Inglês
10.1016/0143-6228(89)90028-3
ISSN1873-7730
Autores Tópico(s)Water Governance and Infrastructure
ResumoAnalysis of the nature of static allometric changes in seven streams affected by urbanization in Ado-Ekiti, southwestern Nigeria, and their comparison with four natural streams in the region reveals that while the channel capacities of the natural streams increase at the same rate with stream discharge, their urban counterparts exist in varying degrees of disequilibrium, becoming fully adjusted to the urban hydrological situation only when urbanization is complete and stable. The degree and location of urbanization in the watersheds appear to be the main determinants of the nature of stream channel response to urbanization. An increase in urban agriculture is suggested as a panacea to reduce urban environmental hazards such as accelerated sheet and gully erosion, sedimentation, and floods in the humid tropics.
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