Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds.
Autor(a) principal: | |
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Data de Publicação: | 1988 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/133195 |
Resumo: | The influences of clearing native vegetation (Caatinga) in contour strips at 25 cm vertical interval on evaporation losses in cleared strips, annual runoff efficiency and annuall soil loss on gently sloped micro-waterheds in the arid zones of Northeast Brazil are reported. The alternate native vegetation (Caatinga) strips function very effectively as windbreaks thus reducing evaporation losses substantially in the leeward cleared strips. The runoff measured at the micro-watershed with cleared strips was many-fold lower than the runoff obtained at a completely denuded watershed even when it was protected by narrow based channel terraces. However, the annual runoff efficiency can be significantly increased in a strip cleared watershed if narrow based channel terraces are provided on the lower side of cleared strips. The annual soil losses in strip cleared watersheds as well as completely denuded waterhed of gentle slopes were negligible. Thus clearing land in alternate contour strips on a micro-watersheds shall substantially improve crop water use efficiency without creating any significant erosion problems. Additionally this treatment will increase runoff for water harvesting for irrigation purposes. |
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Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds.Terra aridaWatershedManagementArid landIrrigaçãoSoloÁguaBacia HidrográficaCaatingaDesmatamentoManejoVegetaçãodeforestationirrigationsoilwatervegetationThe influences of clearing native vegetation (Caatinga) in contour strips at 25 cm vertical interval on evaporation losses in cleared strips, annual runoff efficiency and annuall soil loss on gently sloped micro-waterheds in the arid zones of Northeast Brazil are reported. The alternate native vegetation (Caatinga) strips function very effectively as windbreaks thus reducing evaporation losses substantially in the leeward cleared strips. The runoff measured at the micro-watershed with cleared strips was many-fold lower than the runoff obtained at a completely denuded watershed even when it was protected by narrow based channel terraces. However, the annual runoff efficiency can be significantly increased in a strip cleared watershed if narrow based channel terraces are provided on the lower side of cleared strips. The annual soil losses in strip cleared watersheds as well as completely denuded waterhed of gentle slopes were negligible. Thus clearing land in alternate contour strips on a micro-watersheds shall substantially improve crop water use efficiency without creating any significant erosion problems. Additionally this treatment will increase runoff for water harvesting for irrigation purposes.PREM N. SHARMA, Consultor CPATSA; ADERALDO DE SOUZA SILVA, CPATSA.SHARMA, P. N.SILVA, A. de S.2016-06-01T09:56:20Z2016-06-01T09:56:20Z1996-07-1519882016-06-01T09:56:20Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Agropecuária Brasileira, Brasília, DF, v. 23, n. 7, p. 781-788, jul. 1988.http://www.alice.cnptia.embrapa.br/alice/handle/doc/133195enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T03:29:46Zoai:www.alice.cnptia.embrapa.br:doc/133195Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T03:29:46falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T03:29:46Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
title |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
spellingShingle |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. SHARMA, P. N. Terra arida Watershed Management Arid land Irrigação Solo Água Bacia Hidrográfica Caatinga Desmatamento Manejo Vegetação deforestation irrigation soil water vegetation |
title_short |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
title_full |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
title_fullStr |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
title_full_unstemmed |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
title_sort |
Effect of clearing native forest (Caatinga) strips on some hydrologic components of micro-watersheds. |
author |
SHARMA, P. N. |
author_facet |
SHARMA, P. N. SILVA, A. de S. |
author_role |
author |
author2 |
SILVA, A. de S. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
PREM N. SHARMA, Consultor CPATSA; ADERALDO DE SOUZA SILVA, CPATSA. |
dc.contributor.author.fl_str_mv |
SHARMA, P. N. SILVA, A. de S. |
dc.subject.por.fl_str_mv |
Terra arida Watershed Management Arid land Irrigação Solo Água Bacia Hidrográfica Caatinga Desmatamento Manejo Vegetação deforestation irrigation soil water vegetation |
topic |
Terra arida Watershed Management Arid land Irrigação Solo Água Bacia Hidrográfica Caatinga Desmatamento Manejo Vegetação deforestation irrigation soil water vegetation |
description |
The influences of clearing native vegetation (Caatinga) in contour strips at 25 cm vertical interval on evaporation losses in cleared strips, annual runoff efficiency and annuall soil loss on gently sloped micro-waterheds in the arid zones of Northeast Brazil are reported. The alternate native vegetation (Caatinga) strips function very effectively as windbreaks thus reducing evaporation losses substantially in the leeward cleared strips. The runoff measured at the micro-watershed with cleared strips was many-fold lower than the runoff obtained at a completely denuded watershed even when it was protected by narrow based channel terraces. However, the annual runoff efficiency can be significantly increased in a strip cleared watershed if narrow based channel terraces are provided on the lower side of cleared strips. The annual soil losses in strip cleared watersheds as well as completely denuded waterhed of gentle slopes were negligible. Thus clearing land in alternate contour strips on a micro-watersheds shall substantially improve crop water use efficiency without creating any significant erosion problems. Additionally this treatment will increase runoff for water harvesting for irrigation purposes. |
publishDate |
1988 |
dc.date.none.fl_str_mv |
1988 1996-07-15 2016-06-01T09:56:20Z 2016-06-01T09:56:20Z 2016-06-01T09:56:20Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 23, n. 7, p. 781-788, jul. 1988. http://www.alice.cnptia.embrapa.br/alice/handle/doc/133195 |
identifier_str_mv |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 23, n. 7, p. 781-788, jul. 1988. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/133195 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503421810704384 |