An Assessment and Mapping of Gully Erosion Hazards in Abia State: A GIS Approach

Nwilo, Peter C.; Olayinka, Dupe Nihinlola; Uwadiegwu, Ibeabuchi; Adzandeh, Ayila

doi:10.5539/jsd.v4n5p196

Cited by 26 publications

(22 citation statements)

References 2 publications

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“…(Adaptado de De Ploey, 1983;Lourenço et al, 1990;Favis-Morlock, 1996;Samani et al, 2010;Martins 2010;Nwilo et al, 2011). Lourenço et al, 1990;FavisMorlock, 1996;Samani et al, 2010;Martins 2010;Nwilo et al, 2011).…”

Section: Processos Fundamentais Na Génese E Evolução Das Ravinasunclassified

“…Na maioria das vezes, promovem a concentração da escorrência, como sucede no exemplo em estudo, e a diminuição da infiltração. Alguns estudos têm demonstrado a rápida aceleração na evolução e formação de ravinamentos, associado, por exemplo, à construção de estradas (Reid e Dune, 1996;Nyssen et al, 2002;Douglas e Pietroniro, 2003;Ezezika e Adetona, 2011), pelo que não é de estranhar o aumento no número de trabalhos consagrados ao estudo sobre as ravinas quando associado a problemas de erosão (Bocco, 1991;Martinez-casasnovas et al, 2003;Kheir et al, 2007;Samani et al, 2010;Martins, 2010;Nwilo et al, 2011).…”

Section: Introductionunclassified

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Ação antrópica e risco de ravinamento: o exemplo da ravina do Corgo (rio Alva)

Martins

Lourenço

Lima

2017

TER

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A navegação consulta e descarregamento dos títulos inseridos nas Bibliotecas Digitais UC Digitalis, UC Pombalina e UC Impactum, pressupõem a aceitação plena e sem reservas dos Termos e Condições de Uso destas Bibliotecas Digitais, disponíveis em https://digitalis.uc.pt/pt-pt/termos.Conforme exposto nos referidos Termos e Condições de Uso, o descarregamento de títulos de acesso restrito requer uma licença válida de autorização devendo o utilizador aceder ao(s) documento(s) a partir de um endereço de IP da instituição detentora da supramencionada licença.Ao utilizador é apenas permitido o descarregamento para uso pessoal, pelo que o emprego do(s) título(s) descarregado(s) para outro fim, designadamente comercial, carece de autorização do respetivo autor ou editor da obra.Na medida em que todas as obras da UC Digitalis se encontram protegidas pelo Código do Direito de Autor e Direitos Conexos e demais legislação aplicável, toda a cópia, parcial ou total, deste documento, nos casos em que é legalmente admitida, deverá conter ou fazer-se acompanhar por este aviso.Ação antrópica e risco de ravinamento: o exemplo da ravina do Corgo (rio Alva) Autor(es):Martins, Bruno; Lourenço, Luciano; Lima, Hudson Rodrigues to its genesis, and thus, contribute to the knowledge of one of the erosive processes that contributes most to the development of slopes, such as the ravines.

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Section: Processos Fundamentais Na Génese E Evolução Das Ravinasunclassified

Section: Introductionunclassified

Ação antrópica e risco de ravinamento: o exemplo da ravina do Corgo (rio Alva)

Martins

Lourenço

Lima

2017

TER

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“…Gully erosion has attracted the attention of researchers in Nigeria for many years. [23] adopted Geographic Information Systems (GIS) as a tool to identify and study gully erosion hazards in Abia State, southeastern Nigeria. They found that gully erosion sites were well dispersed around false bedded sandstone geological formation.…”

Section: Geohazards In Nigeriamentioning

confidence: 99%

Environmental Laws in Nigeria and Occurrence of Some Geohazards: A Review

Osumgborogwu¹,

Chi-bo²

2017

AJEE

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Nigeria as a country is blessed with an abundance of both human and natural resources. Exploitation of natural resources in Nigeria over the years with little or no regard for the environment has increased susceptibility of parts of the country to identified geohazards. A suite of environmental laws exist in Nigeria, all these aimed at protecting both the environment and its inhabitants. The aim of this paper is to review existing environmental laws in Nigeria, and occurrence of identified geohazards as a result of absence or non-implementation of these laws. Data for this study were obtained primarily from secondary sources. They are published government reports, journal articles, books, as well as other resources on the environment of Nigeria. Results show that Nigeria as a country has suitable existing and well-meaning environmental laws. The country also has many agencies charged with the responsibilities of implementing these environmental laws and policies. However, the non-implementation and nonexistence of identified environmental laws and policies has increased both exposure and vulnerability of parts of the country to geohazards. The effects of these include; loss of means of livelihood, environmental degradation leading to Badlands in parts of the country, as well as death in extreme cases.

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“…It usually starts unnoticed as a result of raindrop impact, washing away by running water which creates rills that later develop into gullies [10]. The status of the southeastern part of Nigeria as a rainforest zone has now been devastated by the action of gullies [11].…”

Section: The Menace Of Gully Erosion In the Eastmentioning

confidence: 99%

Nigerian water bodies in jeopardy: the need for sustainable management and security

Lohdip¹,

Gongden²

2013

Water Resources Management VII

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The problems of supplying sufficient and sustainable potable water when needed or where it is wanted in sufficient quantities and qualities are acute in Africa. African's problem is not that of scarcity alone but the uncontrollable pollution of the available water bodies in both urban and rural areas. Most dams have become 'dams of death' due to the complexity of disease-causing organisms and toxic substances they contain. The UN declared 2005-2015 the 'water for life decade' with a focus on water related issues, but half of the period is gone without much impact being felt on the continent in terms of accessibility, sanitation, proper management and security. Nigeria is faced with the challenges of oil spillage in the south which has killed virtually all aquatic life forms and rendered the people without potable water for domestic use. Also ravaging the country is the indiscriminate dumping of refuse in lagoons, ponds and rivers in the west, gully erosion which has turned most rivers in the east into 'death traps' and the deserted dams and rivers in the northern part of the country. This paper investigates the past and present situation of the Nigerian water bodies in terms of capacity, accessibility/usage, management and security. Natural and artificial factors responsible for these changes are being explored and possible solutions suggested for remedying the challenges for sustainable management of the available water resources.

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An Assessment and Mapping of Gully Erosion Hazards in Abia State: A GIS Approach

Cited by 26 publications

References 2 publications

Ação antrópica e risco de ravinamento: o exemplo da ravina do Corgo (rio Alva)

Ação antrópica e risco de ravinamento: o exemplo da ravina do Corgo (rio Alva)

Environmental Laws in Nigeria and Occurrence of Some Geohazards: A Review

Nigerian water bodies in jeopardy: the need for sustainable management and security

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