Urban gullies in São Luis City, Maranhão State, Brazil
Fecha
2007Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
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nodoi-noplumx
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Resumen
Urban gully erosion is a serious problem in São Luís
City, Maranhão State, Brazil. São Luís Municipality covers
831.7 km? and is situated in west-central Maranhão Island
(2º19’09”-2º51’00” S; 44º01’16”-44º19’37” W). The
Municipality is bounded by: São José de Ribamar (east); the
Atlantic Ocean (north); Paço do Lumiar (west) and Rosário
(south). The total population of the Municipality is 867,968; ...
[++]
Urban gully erosion is a serious problem in São Luís
City, Maranhão State, Brazil. São Luís Municipality covers
831.7 km? and is situated in west-central Maranhão Island
(2º19’09”-2º51’00” S; 44º01’16”-44º19’37” W). The
Municipality is bounded by: São José de Ribamar (east); the
Atlantic Ocean (north); Paço do Lumiar (west) and Rosário
(south). The total population of the Municipality is 867,968;
the vast majority being resident in urban areas (867,690)
(IBGE, 2001).
The occurrence of soil erosion involves a series of interrelated
contributory factors, including: rainfall erosivity,
soil erodibility, slope characteristics and vegetation cover.
Urban gully erosion in São Luís City has resulted in loss of
lives and property. Environmental conditions (soil
properties, soil use, rainfall regime and slope characteristics)
combined with deforestation and unplanned and unauthorized
urban settlement expansion has promoted land degradation
and initiated gully formation (Guerra and Hoffman, 2006).
The lack of basic urban infrastructure, especially sanitation,
adequate road drains and paved roads, has exacerbated the
problem.
In São Luís, a research project commenced in 2000, in
which actively eroding gullies were identified and their
evolution subsequently monitored. These gullies are in the
districts of Salina, Sacavém, Araçagi, Castelão, Bequimão,
Coeduc and Jaracaty. [--]
Materias
Urban gully erosion,
São Luís City (Brazil)
Editor
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
Publicado en
Javier Casalí, Rafael Giménez (eds.): Progress in Gully Erosion Research. IV International Symposium on Gully Erosion. September 17-19, 2007. Pamplona, Spain. Pamplona: Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007
Notas
Resumen del trabajo presentado al IV International Symposium on Gully Erosion, celebrado en la Universidad Pública de Navarra del 17 al 19 de septiembre de 2007.
Entidades Financiadoras
This research forms part of the BORASSUS Project
‘The environmental and socio-economic contributions of palm-leaf
geotextiles to sustainable development and soil conservation’ (INCO-CT-
2005-510745), funded by the European Commission (EC), Specific
Targeted Research Projects (FP6- STREPs) for Developing Countries
(INCO-DEV) Programme.