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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
21/11/2013 |
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Data da última atualização: |
21/11/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AVANZI, J. C.; SILVA, M. L. N.; CURI, N.; NORTON, L. D.; BESKOW, S.; MARTINS, S. G. |
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Afiliação: |
JUNIOR CESAR AVANZI, CNPASA; MARX LEANDRO NAVES SILVA, UFLA; NILTON CURI, UFLA; LLOYD DARRELL NORTON, USDA; SAMUEL BESKOW, UFPELOTAS; SÉRGIO GUALBERTO MARTINS, UFSÃO JOÃO DEL REY. |
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Título: |
Spatial distribution of water erosion risk in a watershed with eucalyptus and atlantic forest. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Ciência e Agrotecnologia, Lavras, v. 37, n. 5, p. 427-434, set./out. 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
The process of water erosion occurs in watersheds throughout the world and it is strongly affected by anthropogenic influences. Thus, the knowledge of these processes is extremely necessary for planning of conservation efforts. This study was performed in an experimental forested watershed in order to predict the average potential annual soil loss by water erosion using the Universal Soil Loss Equation (USLE) and a Geographic Information System (GIS), and then compared with soil loss tolerance. All the USLE factors were generated in a distributed approach employing a GIS tool. The layers were multiplied in the GIS framework in order to predict soil erosion rates. Results showed that the average soil loss was 6.2 Mg ha-1 yr-1. Relative to soil loss tolerance, 83% of the area had an erosion rate lesser than the tolerable value. According to soil loss classes, 49% of the watershed had erosion less than 2.5 Mg ha-1 yr-1. However, about 8.7% of the watershed had erosion rates greater than 15 Mg ha-1 yr-1, being mainly related to Plinthosol soil class and roads, thus requiring special attention for the improvement of sustainable management practices for such areas. Eucalyptus cultivation was found to have soil loss greater than Atlantic Forest. Thus, an effort should be made to bring the erosion rates closer to the native forest. Implementation of the USLE model in a GIS framework was found to be a simple and useful tool for predicting the spatial variation of soil erosion risk and identifying critical areas for conservation efforts. MenosThe process of water erosion occurs in watersheds throughout the world and it is strongly affected by anthropogenic influences. Thus, the knowledge of these processes is extremely necessary for planning of conservation efforts. This study was performed in an experimental forested watershed in order to predict the average potential annual soil loss by water erosion using the Universal Soil Loss Equation (USLE) and a Geographic Information System (GIS), and then compared with soil loss tolerance. All the USLE factors were generated in a distributed approach employing a GIS tool. The layers were multiplied in the GIS framework in order to predict soil erosion rates. Results showed that the average soil loss was 6.2 Mg ha-1 yr-1. Relative to soil loss tolerance, 83% of the area had an erosion rate lesser than the tolerable value. According to soil loss classes, 49% of the watershed had erosion less than 2.5 Mg ha-1 yr-1. However, about 8.7% of the watershed had erosion rates greater than 15 Mg ha-1 yr-1, being mainly related to Plinthosol soil class and roads, thus requiring special attention for the improvement of sustainable management practices for such areas. Eucalyptus cultivation was found to have soil loss greater than Atlantic Forest. Thus, an effort should be made to bring the erosion rates closer to the native forest. Implementation of the USLE model in a GIS framework was found to be a simple and useful tool for predicting the spatial variation of soil erosion risk an... Mostrar Tudo |
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Palavras-Chave: |
Mata Atlântica. |
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Thesagro: |
Bacia hidrográfica; Distribuição geográfica; Erosão hídrica; Eucalipto; Solo. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/92817/1/avanzi.pdf
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Marc: |
LEADER 02282naa a2200253 a 4500
001 1971734
005 2013-11-21
008 2013 bl uuuu u00u1 u #d
100 1 $aAVANZI, J. C.
245 $aSpatial distribution of water erosion risk in a watershed with eucalyptus and atlantic forest.
260 $c2013
520 $aThe process of water erosion occurs in watersheds throughout the world and it is strongly affected by anthropogenic influences. Thus, the knowledge of these processes is extremely necessary for planning of conservation efforts. This study was performed in an experimental forested watershed in order to predict the average potential annual soil loss by water erosion using the Universal Soil Loss Equation (USLE) and a Geographic Information System (GIS), and then compared with soil loss tolerance. All the USLE factors were generated in a distributed approach employing a GIS tool. The layers were multiplied in the GIS framework in order to predict soil erosion rates. Results showed that the average soil loss was 6.2 Mg ha-1 yr-1. Relative to soil loss tolerance, 83% of the area had an erosion rate lesser than the tolerable value. According to soil loss classes, 49% of the watershed had erosion less than 2.5 Mg ha-1 yr-1. However, about 8.7% of the watershed had erosion rates greater than 15 Mg ha-1 yr-1, being mainly related to Plinthosol soil class and roads, thus requiring special attention for the improvement of sustainable management practices for such areas. Eucalyptus cultivation was found to have soil loss greater than Atlantic Forest. Thus, an effort should be made to bring the erosion rates closer to the native forest. Implementation of the USLE model in a GIS framework was found to be a simple and useful tool for predicting the spatial variation of soil erosion risk and identifying critical areas for conservation efforts.
650 $aBacia hidrográfica
650 $aDistribuição geográfica
650 $aErosão hídrica
650 $aEucalipto
650 $aSolo
653 $aMata Atlântica
700 1 $aSILVA, M. L. N.
700 1 $aCURI, N.
700 1 $aNORTON, L. D.
700 1 $aBESKOW, S.
700 1 $aMARTINS, S. G.
773 $tCiência e Agrotecnologia, Lavras$gv. 37, n. 5, p. 427-434, set./out. 2013.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
02/09/1996 |
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Data da última atualização: |
22/08/2013 |
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Autoria: |
KALIL FILHO, A. N.; REBELLO, A. P. |
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Afiliação: |
EMBRAPA-CNPSD. |
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Título: |
Desenvolvimento do sistema laticífero em Hevea pauciflora (Spr. ex. Beth) Muell. Arg. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Manaus: EMBRAPA-CNPSD, 1987. |
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Páginas: |
5 p. |
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Série: |
(EMBRAPA-CNPSD. Pesquisa em Andamento, 51). |
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ISSN: |
0101-2118 |
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Idioma: |
Português |
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Conteúdo: |
E' relevante o estudo da formacao do sistema laticifero de Hevea pauciflora nas diferentes fases do seu desenvolvimento, a fim de dar suporte a selecao de clones superiores, com relacao ao numero de aneis laticiferos. Foram estudados 40 clones de Hevea pauciflora, durante um periodo de quatro anos, para saber se o balanco entre formacao e perda de aneis laticiferos chega a uma estado de equilibrio e em que fase do desenvolvimento da planta isso ocorre. Ate aos seis anos de idade, isso nao ocorreu. |
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Palavras-Chave: |
Amazonas; Brasil; Desenvolvimento; Hevea pauciflora; Latex occurrence; Rubber tree; Vaso laticifero. |
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Thesagro: |
Seringueira. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/83184/1/Pesquisa-51-1987.pdf
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Marc: |
LEADER 01195nam a2200253 a 4500
001 1665268
005 2013-08-22
008 1987 bl uuuu u0uu1 u #d
022 $a0101-2118
100 1 $aKALIL FILHO, A. N.
245 $aDesenvolvimento do sistema laticífero em Hevea pauciflora (Spr. ex. Beth) Muell. Arg.
260 $aManaus: EMBRAPA-CNPSD$c1987
300 $a5 p.
490 $a(EMBRAPA-CNPSD. Pesquisa em Andamento, 51).
520 $aE' relevante o estudo da formacao do sistema laticifero de Hevea pauciflora nas diferentes fases do seu desenvolvimento, a fim de dar suporte a selecao de clones superiores, com relacao ao numero de aneis laticiferos. Foram estudados 40 clones de Hevea pauciflora, durante um periodo de quatro anos, para saber se o balanco entre formacao e perda de aneis laticiferos chega a uma estado de equilibrio e em que fase do desenvolvimento da planta isso ocorre. Ate aos seis anos de idade, isso nao ocorreu.
650 $aSeringueira
653 $aAmazonas
653 $aBrasil
653 $aDesenvolvimento
653 $aHevea pauciflora
653 $aLatex occurrence
653 $aRubber tree
653 $aVaso laticifero
700 1 $aREBELLO, A. P.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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