|
|
| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
Registro completo
|
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.
Descargar
Esconder MarcPresentar Marc Completo |
Registro original : |
INIA Treinta y Tres (TT) |
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
Registro completo
|
Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
09/10/2015 |
Actualizado : |
28/02/2020 |
Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
Autor : |
BLUMETTO, O.; SCARLATO, S.; TISCORNIA, G.; CASTAGNA, A.; GARCIA, F.; CARDOZO, G.; RUGGIA, A. |
Afiliación : |
OSCAR RICARDO BLUMETTO VELAZCO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO SCARLATO GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUADALUPE TISCORNIA TOSAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDRES CASTAGNA DU PRE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FELIPE LUIS GARCIA OLASO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANDREA PAOLA RUGGIA CHIESA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Re-disigned farming systems as a key for biodiversity conservation in Uruguay. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
In: Proceedings of the 5th international symposium for farming systems design. Multi-functional farming systems in a changing world. Montpellier (Francia): European Society of Agronomy, 2015. |
Páginas : |
p. 259-260. |
Idioma : |
Inglés |
Contenido : |
Only 0,6 % of Uruguayan land is under somehow protection such as National Parks or Protected Landscape. In this context wild life and biodiversity conservation in general depends on private areas which major part are under different production systems. T |
Palabras claves : |
ARAÑAS. |
Thesagro : |
AVES; COMPOSICION BOTANICA; COMUNIDADES DE PLANTAS; CONSERVACION DE LA DIVERSIDAD; DISENO; ECOSISTEMAS; SISTEMAS AGRICOLAS; URUGUAY. |
Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/5047/1/Congreso-FSD5-2015-CARDOZO-2.pdf
|
Marc : |
LEADER 01222nam a2200301 a 4500 001 1053541 005 2020-02-28 008 2015 bl uuuu u01u1 u #d 100 1 $aBLUMETTO, O. 245 $aRe-disigned farming systems as a key for biodiversity conservation in Uruguay.$h[electronic resource] 260 $aIn: Proceedings of the 5th international symposium for farming systems design. Multi-functional farming systems in a changing world. Montpellier (Francia): European Society of Agronomy$c2015 300 $ap. 259-260. 520 $aOnly 0,6 % of Uruguayan land is under somehow protection such as National Parks or Protected Landscape. In this context wild life and biodiversity conservation in general depends on private areas which major part are under different production systems. T 650 $aAVES 650 $aCOMPOSICION BOTANICA 650 $aCOMUNIDADES DE PLANTAS 650 $aCONSERVACION DE LA DIVERSIDAD 650 $aDISENO 650 $aECOSISTEMAS 650 $aSISTEMAS AGRICOLAS 650 $aURUGUAY 653 $aARAÑAS 700 1 $aSCARLATO, S. 700 1 $aTISCORNIA, G. 700 1 $aCASTAGNA, A. 700 1 $aGARCIA, F. 700 1 $aCARDOZO, G. 700 1 $aRUGGIA, A.
Descargar
Esconder MarcPresentar Marc Completo |
Registro original : |
INIA Treinta y Tres (TT) |
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
Expresión de búsqueda válido. Check! |
|
|