Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed.
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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Format: | Artigo de periódico biblioteca |
Language: | English eng |
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2014-12-02
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Subjects: | SAFER., Evapotranspiration, Vegetation, Land use., |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001283 |
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dig-alice-doc-10012832017-08-16T00:37:51Z Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. ANDRADE, R. G. TEIXEIRA, A. H. de C. SANO, E. E. LEIVAS, J. F. VICTORIA, D. de C. NOGUEIRA, S. F. 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. SAFER. Evapotranspiration Vegetation Land use. 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. Presented at the 16th Remote Sensing for Agriculture, Ecosystems, and Hydrology. 2014-12-02T11:11:11Z 2014-12-02T11:11:11Z 2014-12-02 2014 2014-12-02T11:11:11Z Artigo de periódico 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 en eng openAccess |
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SAFER. Evapotranspiration Vegetation Land use. SAFER. Evapotranspiration Vegetation Land use. |
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SAFER. Evapotranspiration Vegetation Land use. SAFER. Evapotranspiration Vegetation Land use. ANDRADE, R. G. TEIXEIRA, A. H. de C. SANO, E. E. LEIVAS, J. F. VICTORIA, D. de C. NOGUEIRA, S. F. Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
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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. |
author2 |
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. |
author_facet |
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. |
format |
Artigo de periódico |
topic_facet |
SAFER. Evapotranspiration Vegetation Land use. |
author |
ANDRADE, R. G. TEIXEIRA, A. H. de C. SANO, E. E. LEIVAS, J. F. VICTORIA, D. de C. NOGUEIRA, S. F. |
author_sort |
ANDRADE, R. G. |
title |
Pasture evapotranspiration as indicators of degradation in the Brazilian Savanna. A case study for Alto Tocantins watershed. |
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. |
publishDate |
2014-12-02 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001283 |
work_keys_str_mv |
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