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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
SANDERS, D. W. |
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Título: |
The eppalock cathment project: a soil conservation success story |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
In: MOLDENHAUER, W.C.; HUDSON, N.W. Conservation farming on steep lands. Ankeny: Soil and Water Conservation Society, 1988. |
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Páginas: |
p.228-232 |
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Idioma: |
Inglês |
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Conteúdo: |
In 1960 the Government of Vitoria, Australia, started construction of the Eppalock Dam.The 2,000-square-kilometer catchment was seriously eroded, and sedimentation threatened to reduce the effective life of the dam if left untreated. The government agreed to make available US $110,000 annually for 10 years to do the necessary conservation work. The catchment originally had been a dense eucalyptus forest. In 1960 it consisted largely of poor, eroded grazing land. This resulted from clearing of the land for firewood and timber during the gold mining period, over-cultivation of land not suited to cultivation, followed by over-grazing by sheep and rabbits. In the drier northern area, where annual rainfall is less than 650 millimeters, the shallow soils were extre-mely erodible. Extensive tunnelling and gullying was present. Sheet erosion produced stony surfaces on steep slopes, which, in turn, produced high runoff and more gullies. In some places the altered hydrologic system resulted in greater seepage and dryland salting. This was an example of land degradation rarely paralleled in other parts of Australia. The central area, with poor granitic soils, was also badly eroded. However, most of the steeper southern part of the catchment, in a higher rainfall area, was not badly affected by soil erosion. Apart from some state-owned forest, most of the land was help by private farmers. Holdings varied in size from about 4,000 hectares to plots of less than 10 hectares. Many small landholders were part-time farmers who... MenosIn 1960 the Government of Vitoria, Australia, started construction of the Eppalock Dam.The 2,000-square-kilometer catchment was seriously eroded, and sedimentation threatened to reduce the effective life of the dam if left untreated. The government agreed to make available US $110,000 annually for 10 years to do the necessary conservation work. The catchment originally had been a dense eucalyptus forest. In 1960 it consisted largely of poor, eroded grazing land. This resulted from clearing of the land for firewood and timber during the gold mining period, over-cultivation of land not suited to cultivation, followed by over-grazing by sheep and rabbits. In the drier northern area, where annual rainfall is less than 650 millimeters, the shallow soils were extre-mely erodible. Extensive tunnelling and gullying was present. Sheet erosion produced stony surfaces on steep slopes, which, in turn, produced high runoff and more gullies. In some places the altered hydrologic system resulted in greater seepage and dryland salting. This was an example of land degradation rarely paralleled in other parts of Australia. The central area, with poor granitic soils, was also badly eroded. However, most of the steeper southern part of the catchment, in a higher rainfall area, was not badly affected by soil erosion. Apart from some state-owned forest, most of the land was help by private farmers. Holdings varied in size from about 4,000 hectares to plots of less than 10 hectares. Many small lan... Mostrar Tudo |
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Palavras-Chave: |
Cultivo; Solos. |
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Thesagro: |
Água; Conservação; Manejo; Produção. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02123naa a2200205 a 4500
001 1327909
005 2002-11-22
008 1988 bl uuuu u00u1 u #d
100 1 $aSANDERS, D. W.
245 $aThe eppalock cathment project$ba soil conservation success story
260 $c1988
300 $ap.228-232
520 $aIn 1960 the Government of Vitoria, Australia, started construction of the Eppalock Dam.The 2,000-square-kilometer catchment was seriously eroded, and sedimentation threatened to reduce the effective life of the dam if left untreated. The government agreed to make available US $110,000 annually for 10 years to do the necessary conservation work. The catchment originally had been a dense eucalyptus forest. In 1960 it consisted largely of poor, eroded grazing land. This resulted from clearing of the land for firewood and timber during the gold mining period, over-cultivation of land not suited to cultivation, followed by over-grazing by sheep and rabbits. In the drier northern area, where annual rainfall is less than 650 millimeters, the shallow soils were extre-mely erodible. Extensive tunnelling and gullying was present. Sheet erosion produced stony surfaces on steep slopes, which, in turn, produced high runoff and more gullies. In some places the altered hydrologic system resulted in greater seepage and dryland salting. This was an example of land degradation rarely paralleled in other parts of Australia. The central area, with poor granitic soils, was also badly eroded. However, most of the steeper southern part of the catchment, in a higher rainfall area, was not badly affected by soil erosion. Apart from some state-owned forest, most of the land was help by private farmers. Holdings varied in size from about 4,000 hectares to plots of less than 10 hectares. Many small landholders were part-time farmers who...
650 $aÁgua
650 $aConservação
650 $aManejo
650 $aProdução
653 $aCultivo
653 $aSolos
773 $tIn: MOLDENHAUER, W.C.; HUDSON, N.W. Conservation farming on steep lands. Ankeny: Soil and Water Conservation Society, 1988.
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Embrapa Solos (CNPS) |
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