Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed.
Main Author: | |
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Publication Date: | 2014 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Download full: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001283 |
Summary: | The Alto Tocantins watershed, located in the Brazilian Savanna (Cerrado biome), is under an intense land use and occupation process, causing increased pressure on natural resources. Pasture areas in the region are highly relevant to the rational use of natural resources in order to achieve economic and environmental sustainability. In this context, remote sensing techniques have been essential for obtaining information relevant to the assessment of vegetation conditions on a large scale. This study aimed to apply this tool in conjunction with field measurements to evaluate evapotranspiration (ET) against pasture degradation indicators. The SAFER algorithm was applied to estimate ET using MODIS images and weather station data from year 2012. Results showed that ET was lower in degraded pastures. It is noteworthy that during low rainfall period, ET values were 22.2% lower in relation to non-degraded pastures. This difference in ET indicates changes in the partition of the energy balance and may impact the microclimate. These results may contribute to public policies that aim to reduce the loss of the productive potential of pastures. |
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Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed.SAFEREvapotranspirationVegetationLand useThe Alto Tocantins watershed, located in the Brazilian Savanna (Cerrado biome), is under an intense land use and occupation process, causing increased pressure on natural resources. Pasture areas in the region are highly relevant to the rational use of natural resources in order to achieve economic and environmental sustainability. In this context, remote sensing techniques have been essential for obtaining information relevant to the assessment of vegetation conditions on a large scale. This study aimed to apply this tool in conjunction with field measurements to evaluate evapotranspiration (ET) against pasture degradation indicators. The SAFER algorithm was applied to estimate ET using MODIS images and weather station data from year 2012. Results showed that ET was lower in degraded pastures. It is noteworthy that during low rainfall period, ET values were 22.2% lower in relation to non-degraded pastures. This difference in ET indicates changes in the partition of the energy balance and may impact the microclimate. These results may contribute to public policies that aim to reduce the loss of the productive potential of pastures.Presented at the 16th Remote Sensing for Agriculture, Ecosystems, and Hydrology.RICARDO GUIMARAES ANDRADE, CNPM; ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; EDSON EYJI SANO, CPAC; JANICE FREITAS LEIVAS, CNPM; DANIEL DE CASTRO VICTORIA, CNPM; SANDRA FURLAN NOGUEIRA, CNPM.ANDRADE, R. G.TEIXEIRA, A. H. de C.SANO, E. E.LEIVAS, J. F.VICTORIA, D. de C.NOGUEIRA, S. F.2014-12-02T11:11:11Z2014-12-02T11:11:11Z2014-12-0220142014-12-02T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleProceedings of SPIE, v. 9239, p. 92391Z-1 - 92391Z-7, 2014.0277-786Xhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/100128310.1117/12.2067225enginfo: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:EMBRAPA2017-08-16T00:37:51Zoai:www.alice.cnptia.embrapa.br:doc/1001283Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T00:37:51falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T00:37:51Repositório 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 |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
title |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
spellingShingle |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. ANDRADE, R. G. SAFER Evapotranspiration Vegetation Land use |
title_short |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
title_full |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
title_fullStr |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
title_full_unstemmed |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
title_sort |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
author |
ANDRADE, R. G. |
author_facet |
ANDRADE, R. G. TEIXEIRA, A. H. de C. SANO, E. E. LEIVAS, J. F. VICTORIA, D. de C. NOGUEIRA, S. F. |
author_role |
author |
author2 |
TEIXEIRA, A. H. de C. SANO, E. E. LEIVAS, J. F. VICTORIA, D. de C. NOGUEIRA, S. F. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
RICARDO GUIMARAES ANDRADE, CNPM; ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; EDSON EYJI SANO, CPAC; JANICE FREITAS LEIVAS, CNPM; DANIEL DE CASTRO VICTORIA, CNPM; SANDRA FURLAN NOGUEIRA, CNPM. |
dc.contributor.author.fl_str_mv |
ANDRADE, R. G. TEIXEIRA, A. H. de C. SANO, E. E. LEIVAS, J. F. VICTORIA, D. de C. NOGUEIRA, S. F. |
dc.subject.por.fl_str_mv |
SAFER Evapotranspiration Vegetation Land use |
topic |
SAFER Evapotranspiration Vegetation Land use |
description |
The Alto Tocantins watershed, located in the Brazilian Savanna (Cerrado biome), is under an intense land use and occupation process, causing increased pressure on natural resources. Pasture areas in the region are highly relevant to the rational use of natural resources in order to achieve economic and environmental sustainability. In this context, remote sensing techniques have been essential for obtaining information relevant to the assessment of vegetation conditions on a large scale. This study aimed to apply this tool in conjunction with field measurements to evaluate evapotranspiration (ET) against pasture degradation indicators. The SAFER algorithm was applied to estimate ET using MODIS images and weather station data from year 2012. Results showed that ET was lower in degraded pastures. It is noteworthy that during low rainfall period, ET values were 22.2% lower in relation to non-degraded pastures. This difference in ET indicates changes in the partition of the energy balance and may impact the microclimate. These results may contribute to public policies that aim to reduce the loss of the productive potential of pastures. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-02T11:11:11Z 2014-12-02T11:11:11Z 2014-12-02 2014 2014-12-02T11:11:11Z |
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 |
Proceedings of SPIE, v. 9239, p. 92391Z-1 - 92391Z-7, 2014. 0277-786X http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001283 10.1117/12.2067225 |
identifier_str_mv |
Proceedings of SPIE, v. 9239, p. 92391Z-1 - 92391Z-7, 2014. 0277-786X 10.1117/12.2067225 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001283 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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cg-riaa@embrapa.br |
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