Leaf and stand - level carbon uptake of a Mediterranean forest estimated using the satellite - derived reflectance indices EVI and PRI

Various aspects of global environmental change affect plant photosynthesis, the primary carbon input in ecosystems. Thus, accurate methods of measuring plant photosynthesis are important. Remotely sensed spectral indices can monitor in detail the green biomass of ecosystems, which provides a measure...

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Detalles Bibliográficos
Otros Autores: Garbulsky, Martín Fabio, Peñuelas, Josep, Ogaya, Romá, Filella, Iolanda
Formato: Artículo
Lenguaje:Inglés
Materias:
CARBON UPTAKE
ECOSYSTEM LEVELS
ENHANCED VEGETATION INDEX
GLOBAL ENVIRONMENTAL CHANGE
GROWING SEASON
LEAF LEVEL
MEDITERRANEAN FOREST
MODERATE RESOLUTION IMAGING SPECTRORADIOMETER SENSORS
NET PHOTOSYNTHETIC RATE
NORMALIZED DIFFERENCE VEGETATION INDEX
PHOTOCHEMICAL REFLECTANCE INDEX
PHOTOSYNTHETIC CAPACITY
PRIMARY CARBON
QUERCUS ILEX
RADIATION USE EFFICIENCY
REFLECTANCE INDEX
SATELLITE DATA
SPECTRAL INDICES
VEGETATION TYPE
ECOSYSTEMS
OPTICAL WAVEGUIDES
PHOTOSYNTHESIS
RADIOMETERS
REMOTE SENSING
SATELLITE IMAGERY
FORESTRY
ACCURACY ASSESSMENT
CARBON FLUX
ENVIRONMENTAL MONITORING
EVERGREEN FOREST
LEAF AREA INDEX
LIGHT USE EFFICIENCY
MEDITERRANEAN ENVIRONMENT
NDVI
PHOTOCHEMISTRY
SPECTRAL REFLECTANCE
VEGETATION INDEX
BIOMASS
CARBON
FORESTS
PLANTS
RADIOMETRY
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2013garbulsky.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Leaf and stand - level carbon uptake of a Mediterranean forest estimated using the satellite - derived reflectance indices EVI and PRI 
520 |a Various aspects of global environmental change affect plant photosynthesis, the primary carbon input in ecosystems. Thus, accurate methods of measuring plant photosynthesis are important. Remotely sensed spectral indices can monitor in detail the green biomass of ecosystems, which provides a measure of potential photosynthetic capacity. In evergreen vegetation types, however, such as Mediterranean forests, the amount of green biomass changes little during the growing season and, therefore, changes in green biomass are not responsible for changes in photosynthetic rates in those forests. This study examined the net photosynthetic rates and the diametric increment of stems in a Mediterranean forest dominated by Quercus ilex using three spectral indices [normalized difference vegetation index [NDVI], enhanced vegetation index [EVI], and photochemical reflectance index [PRI]] derived from Moderate Resolution Imaging Spectroradiometer [MODIS] sensors. Average annual EVI accounted for 83 percent of the variability of the diametric increment of Q. ilex stems over a 10 year period. NDVI was marginally correlated with the diametric increment of stems. This study was the first to identify a significant correlation between net photosynthetic rates and radiation use efficiency at the leaf level using PRI derived from satellite data analysed at the ecosystem level. These results suggest that each spectral index provided different and complementary information about ecosystem carbon uptake in a Mediterranean Q. ilex forest. 
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653 0 |a GLOBAL ENVIRONMENTAL CHANGE 
653 0 |a GROWING SEASON 
653 0 |a LEAF LEVEL 
653 0 |a MEDITERRANEAN FOREST 
653 0 |a MODERATE RESOLUTION IMAGING SPECTRORADIOMETER SENSORS 
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773 |t International Journal of Remote Sensing  |g vol.34, no.4 (2013), p.1282-1296 
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900 |a LEAF LEVEL 
900 |a MEDITERRANEAN FOREST 
900 |a MODERATE RESOLUTION IMAGING SPECTRORADIOMETER SENSORS 
900 |a NET PHOTOSYNTHETIC RATE 
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900 |a Various aspects of global environmental change affect plant photosynthesis, the primary carbon input in ecosystems. Thus, accurate methods of measuring plant photosynthesis are important. Remotely sensed spectral indices can monitor in detail the green biomass of ecosystems, which provides a measure of potential photosynthetic capacity. In evergreen vegetation types, however, such as Mediterranean forests, the amount of green biomass changes little during the growing season and, therefore, changes in green biomass are not responsible for changes in photosynthetic rates in those forests. This study examined the net photosynthetic rates and the diametric increment of stems in a Mediterranean forest dominated by Quercus ilex using three spectral indices [normalized difference vegetation index [NDVI], enhanced vegetation index [EVI], and photochemical reflectance index [PRI]] derived from Moderate Resolution Imaging Spectroradiometer [MODIS] sensors. Average annual EVI accounted for 83 percent of the variability of the diametric increment of Q. ilex stems over a 10 year period. NDVI was marginally correlated with the diametric increment of stems. This study was the first to identify a significant correlation between net photosynthetic rates and radiation use efficiency at the leaf level using PRI derived from satellite data analysed at the ecosystem level. These results suggest that each spectral index provided different and complementary information about ecosystem carbon uptake in a Mediterranean Q. ilex forest. 
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