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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
12/09/2014 |
Actualizado : |
27/09/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
BAEZA, S.; LEZAMA, F.; PIÑEIRO, G.; ALTESOR, A.; PARUELO, J.M. |
Afiliación : |
FELIPE LEZAMA HUERTA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Spatial variability of above-ground net primary production in Uruguayan grasslands: A remote sensing approach. |
Fecha de publicación : |
2010 |
Fuente / Imprenta : |
Applied Vegetation Science, 2010, v. 13, no. 1 p. 72-85. |
ISSN : |
1654-109X |
DOI : |
10.1111/j.1654-109X.2009.01051.x |
Idioma : |
Inglés |
Notas : |
Article history: Received 4 November 2008; accepted 16 July 2009. Published in 2010. |
Contenido : |
Abstract:
Question: How does above-ground net primary production (ANPP) differ (estimated from remotely sensed data) among vegetation units in sub-humid temperate grasslands?
Location: Centre-north Uruguay.
Methods: A vegetation map of the study area was generated from LANDSAT imagery and the landscape configuration described. The functional heterogeneity of mapping units was analysed in terms of the fraction of photosynthetically active radiation absorbed by green vegetation (fPAR), calculated from the normalized difference vegetation index (NDVI) images provided by the moderate resolution imaging spectroradiometer (MODIS) sensor. Finally, the ANPP of each grassland class was estimated using NDVI and climatic data.
Results: Supervised classification presented a good overall accuracy and moderate to good average accuracy for grassland classes. Meso-xerophytic grasslands
occupied 45% of the area, Meso-hydrophytic grasslands 43% and Lithophytic steppes 6%. The landscape was shaped by a matrix of large, unfragmented patches of Meso-xerophytic and Meso-hydrophytic grasslands. The region presented the lowest anthropic fragmentation degree reported for the Rio de la Plata grasslands. All grassland units showed bimodal annual fPAR seasonality, with spring and autumn peaks. Meso-hydrophytic grasslands showed a radiation interception 10% higher than the other units. On an annual basis, Meso-hydrophytic grasslands produced 3800 kg dry matter (DM) ha 1 yr 1 and Meso-xerophytic grasslands and ithophytic
steppes around 3400 kg DM ha 1 yr 1 . Mesoxerophytic grasslands had the largest spatial variation during most of the year. The ANPP temporal variation was higher than the fPAR variability.
Conclusions: Our results provide valuable information for grazing management (identifying spatial and temporal variations of ANPP) and grassland conservation (identifying the spatial distribution of vegetation units). MenosAbstract:
Question: How does above-ground net primary production (ANPP) differ (estimated from remotely sensed data) among vegetation units in sub-humid temperate grasslands?
Location: Centre-north Uruguay.
Methods: A vegetation map of the study area was generated from LANDSAT imagery and the landscape configuration described. The functional heterogeneity of mapping units was analysed in terms of the fraction of photosynthetically active radiation absorbed by green vegetation (fPAR), calculated from the normalized difference vegetation index (NDVI) images provided by the moderate resolution imaging spectroradiometer (MODIS) sensor. Finally, the ANPP of each grassland class was estimated using NDVI and climatic data.
Results: Supervised classification presented a good overall accuracy and moderate to good average accuracy for grassland classes. Meso-xerophytic grasslands
occupied 45% of the area, Meso-hydrophytic grasslands 43% and Lithophytic steppes 6%. The landscape was shaped by a matrix of large, unfragmented patches of Meso-xerophytic and Meso-hydrophytic grasslands. The region presented the lowest anthropic fragmentation degree reported for the Rio de la Plata grasslands. All grassland units showed bimodal annual fPAR seasonality, with spring and autumn peaks. Meso-hydrophytic grasslands showed a radiation interception 10% higher than the other units. On an annual basis, Meso-hydrophytic grasslands produced 3800 kg dry matter (DM) ha 1 yr 1 and Meso-xerophytic grassl... Presentar Todo |
Palabras claves : |
LAND-COVE CLASSIFICATION; NATIVE GRASS-LANDS; NDVI; NORMALIZED DIFFERENCE VETETATION INDEX (NDVI); RADIATION-USE EFFICIENCY; RIO DE LA PLATA GRASSLANDS. |
Thesagro : |
ESPECIES; IDENTIFICACION; PASTIZAL NATURAL; SISTEMAS GEOGRAFICOS; URUGUAY. |
Asunto categoría : |
F70 Taxonomía y geografía de las plantas |
Marc : |
LEADER 03025naa a2200337 a 4500 001 1050200 005 2018-09-27 008 2010 bl uuuu u00u1 u #d 022 $a1654-109X 024 7 $a10.1111/j.1654-109X.2009.01051.x$2DOI 100 1 $aBAEZA, S. 245 $aSpatial variability of above-ground net primary production in Uruguayan grasslands$bA remote sensing approach.$h[electronic resource] 260 $c2010 500 $aArticle history: Received 4 November 2008; accepted 16 July 2009. Published in 2010. 520 $aAbstract: Question: How does above-ground net primary production (ANPP) differ (estimated from remotely sensed data) among vegetation units in sub-humid temperate grasslands? Location: Centre-north Uruguay. Methods: A vegetation map of the study area was generated from LANDSAT imagery and the landscape configuration described. The functional heterogeneity of mapping units was analysed in terms of the fraction of photosynthetically active radiation absorbed by green vegetation (fPAR), calculated from the normalized difference vegetation index (NDVI) images provided by the moderate resolution imaging spectroradiometer (MODIS) sensor. Finally, the ANPP of each grassland class was estimated using NDVI and climatic data. Results: Supervised classification presented a good overall accuracy and moderate to good average accuracy for grassland classes. Meso-xerophytic grasslands occupied 45% of the area, Meso-hydrophytic grasslands 43% and Lithophytic steppes 6%. The landscape was shaped by a matrix of large, unfragmented patches of Meso-xerophytic and Meso-hydrophytic grasslands. The region presented the lowest anthropic fragmentation degree reported for the Rio de la Plata grasslands. All grassland units showed bimodal annual fPAR seasonality, with spring and autumn peaks. Meso-hydrophytic grasslands showed a radiation interception 10% higher than the other units. On an annual basis, Meso-hydrophytic grasslands produced 3800 kg dry matter (DM) ha 1 yr 1 and Meso-xerophytic grasslands and ithophytic steppes around 3400 kg DM ha 1 yr 1 . Mesoxerophytic grasslands had the largest spatial variation during most of the year. The ANPP temporal variation was higher than the fPAR variability. Conclusions: Our results provide valuable information for grazing management (identifying spatial and temporal variations of ANPP) and grassland conservation (identifying the spatial distribution of vegetation units). 650 $aESPECIES 650 $aIDENTIFICACION 650 $aPASTIZAL NATURAL 650 $aSISTEMAS GEOGRAFICOS 650 $aURUGUAY 653 $aLAND-COVE CLASSIFICATION 653 $aNATIVE GRASS-LANDS 653 $aNDVI 653 $aNORMALIZED DIFFERENCE VETETATION INDEX (NDVI) 653 $aRADIATION-USE EFFICIENCY 653 $aRIO DE LA PLATA GRASSLANDS 700 1 $aLEZAMA, F. 700 1 $aPIÑEIRO, G. 700 1 $aALTESOR, A. 700 1 $aPARUELO, J.M. 773 $tApplied Vegetation Science, 2010$gv. 13, no. 1 p. 72-85.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
19/02/2019 |
Tipo de producción científica : |
Documentos |
Autor : |
DE BARBIERI, I.; MONTOSSI, F.; BERRETTA, E.J.; DIGHIERO, A.; NOLLA, M.; LUZARDO, S.; MEDEROS, A.; GARÍN, M.; MARTINEZ, H.; LEVRATTO, J.; BENTANCURT, M.; ARMAND,UGON, R.; ROVIRA, F.; FRUGONI, J.C.; ZAMIT, W. |
Afiliación : |
LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELBIO JOAQUIN BERRETTA CARVALLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO DIGHIERO FASCIOLI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARTIN ANDRES NOLLA LAFRANCONI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO FELIPE LUZARDO VILLAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; AMERICA ESTHER MEDEROS SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; HOMERO MARTINEZ FORMOSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN CARLOS LEVRATTO CORTES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MAURO ANDRES BENTANCURT PONTTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RAUL ANDRE ARMAND,UGON RUSIÑOL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FERNANDO ROVIRA GALARRAGA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JULIO CESAR FRUGONI SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WILFREDO SHAMIL ZAMIT DUARTE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Influencia de la carga animal y el sistema de pastoreo sobre la vegetación de campo natural en sistemas de producción de lanas finas y superfinas: parte I. |
Fecha de publicación : |
2005 |
Fuente / Imprenta : |
ln: INIA TACUAREMBÓ. ESTACIÓN EXPERIMENTAL GLENCOE. Día de campo. Producción animal, pasturas y forestal. Estación Experimental Glencoe, Paysandú, octubre, 2005. Tacuarembó (Uruguay): INIA, 2005. |
Páginas : |
p. 11-13 |
Serie : |
(INIA Serie Actividades de Difusión ; 431) |
Idioma : |
Español |
Contenido : |
Objetivo: Es aportar información científico-técnica que permita evaluar el impacto de determinadas medidas de manejo, de pasturas y animales, sobre la cantidad y calidad del producto y la sustentabilidad de las mismas, orientadas en el diseño de sistemas de producción de lanas finas y superfinas sobre campo natural principalmente desarrolladas en la región de Basalto. |
Palabras claves : |
ANIMAL PRODUCTION; SHEEP. |
Thesagro : |
MANEJO DE PRADERAS; PRODUCCION DE LANA; SUELO BASALTICO; URUGUAY. |
Asunto categoría : |
L01 Ganadería |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/10349/1/SAD431p11-13.pdf
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Marc : |
LEADER 01630naa a2200385 a 4500 001 1025584 005 2019-02-19 008 2005 bl uuuu u00u1 u #d 100 1 $aDE BARBIERI, I. 245 $aInfluencia de la carga animal y el sistema de pastoreo sobre la vegetación de campo natural en sistemas de producción de lanas finas y superfinas$bparte I. 260 $c2005 300 $ap. 11-13 490 $a(INIA Serie Actividades de Difusión ; 431) 520 $aObjetivo: Es aportar información científico-técnica que permita evaluar el impacto de determinadas medidas de manejo, de pasturas y animales, sobre la cantidad y calidad del producto y la sustentabilidad de las mismas, orientadas en el diseño de sistemas de producción de lanas finas y superfinas sobre campo natural principalmente desarrolladas en la región de Basalto. 650 $aMANEJO DE PRADERAS 650 $aPRODUCCION DE LANA 650 $aSUELO BASALTICO 650 $aURUGUAY 653 $aANIMAL PRODUCTION 653 $aSHEEP 700 1 $aMONTOSSI, F. 700 1 $aBERRETTA, E.J. 700 1 $aDIGHIERO, A. 700 1 $aNOLLA, M. 700 1 $aLUZARDO, S. 700 1 $aMEDEROS, A. 700 1 $aGARÍN, M. 700 1 $aMARTINEZ, H. 700 1 $aLEVRATTO, J. 700 1 $aBENTANCURT, M. 700 1 $aARMAND,UGON, R. 700 1 $aROVIRA, F. 700 1 $aFRUGONI, J.C. 700 1 $aZAMIT, W. 773 $tln: INIA TACUAREMBÓ. ESTACIÓN EXPERIMENTAL GLENCOE. Día de campo. Producción animal, pasturas y forestal. Estación Experimental Glencoe, Paysandú, octubre, 2005. Tacuarembó (Uruguay): INIA, 2005.
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