2003
DOI: 10.1117/12.462471
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Comparison among normalized vegetation indices for the determination of LAI

Abstract: Airborne hyperspectral images collected over San Rossore Natural Park (Pisa, Italy) by the Multispectral Infrared and Visible Imaging Spectrometer (MIVIS) on June 21st, 2000 were analyzed in order to assess the best indices for forest LAI estimation. Hemispherical photography was used for ground truth measurements, simultaneously with the overflights, in hardwood and conifer stands characterized by a LAI ranging between 1.2 and 4.5. All band combinations expressed as simple ratios and normalized indices (a tot… Show more

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“…To this end, we first compare vegetation/topographic characterizations obtained from satellite optical remote sensing (such as hyperspectral‐derived normalized difference vegetation index, NDVI), airborne laser altimetry (such as lidar‐derived leaf area index, LAI), and field observations. Although the simultaneous computation of NDVI and LAI, and their comparison, has been explored in other ecosystems [e.g., Bernasconi et al ., ; Jin and Eklundh , ], this comparison had not yet been performed for short vegetation species typical of coastal systems. Next, we use the resulting spatial distributions of ecological and topographic properties to identify and study the outcome of coupled ecological and sediment transport processes.…”
Section: Introductionmentioning
confidence: 99%
“…To this end, we first compare vegetation/topographic characterizations obtained from satellite optical remote sensing (such as hyperspectral‐derived normalized difference vegetation index, NDVI), airborne laser altimetry (such as lidar‐derived leaf area index, LAI), and field observations. Although the simultaneous computation of NDVI and LAI, and their comparison, has been explored in other ecosystems [e.g., Bernasconi et al ., ; Jin and Eklundh , ], this comparison had not yet been performed for short vegetation species typical of coastal systems. Next, we use the resulting spatial distributions of ecological and topographic properties to identify and study the outcome of coupled ecological and sediment transport processes.…”
Section: Introductionmentioning
confidence: 99%