Analysis of NDVI and scaled difference vegetation index retrievals of vegetation fraction

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dc.contributor.author Jiang, Z
dc.contributor.author Huete, AR
dc.contributor.author Chen, J
dc.contributor.author Chen, Y
dc.contributor.author Li, J
dc.contributor.author Yan, G
dc.contributor.author Zhang, X
dc.date.accessioned 2010-05-28T09:48:19Z
dc.date.issued 2006-04-15
dc.identifier.citation Remote Sensing of Environment, 2006, 101 (3), pp. 366 - 378
dc.identifier.issn 0034-4257
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/9236
dc.description.abstract The normalized difference vegetation index (NDVI) is the most widely used vegetation index for retrieval of vegetation canopy biophysical properties. Several studies have investigated the spatial scale dependencies of NDVI and the relationship between NDVI and fractional vegetation cover, but without any consensus on the two issues. The objectives of this paper are to analyze the spatial scale dependencies of NDVI and to analyze the relationship between NDVI and fractional vegetation cover at different resolutions based on linear spectral mixing models. Our results show strong spatial scale dependencies of NDVI over heterogeneous surfaces, indicating that NDVI values at different resolutions may not be comparable. The nonlinearity of NDVI over partially vegetated surfaces becomes prominent with darker soil backgrounds and with presence of shadow. Thus, the NDVI may not be suitable to infer vegetation fraction because of its nonlinearity and scale effects. We found that the scaled difference vegetation index (SDVI), a scale-invariant index based on linear spectral mixing of red and near-infrared reflectances, is a more suitable and robust approach for retrieval of vegetation fraction with remote sensing data, particularly over heterogeneous surfaces. The proposed method was validated with experimental field data, but further validation at the satellite level would be needed. © 2006 Elsevier Inc. All rights reserved.
dc.language eng
dc.relation.isbasedon 10.1016/j.rse.2006.01.003
dc.subject NDVI, Scale effect of NDVI, SDVI, Vegetation fraction retrieval, NDVI, SDVI, Scale effect of NDVI, Vegetation fraction retrieval, Geological & Geomatics Engineering
dc.subject NDVI; Scale effect of NDVI; SDVI; Vegetation fraction retrieval; NDVI; SDVI; Scale effect of NDVI; Vegetation fraction retrieval; Geological & Geomatics Engineering
dc.title Analysis of NDVI and scaled difference vegetation index retrievals of vegetation fraction
dc.type Journal Article
dc.parent Remote Sensing of Environment
dc.journal.volume 3
dc.journal.volume 101
dc.journal.number 3 en_US
dc.publocation United States en_US
dc.identifier.startpage 366 en_US
dc.identifier.endpage 369 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0502 Environmental Science and Management
dc.personcode 0000058678 en_US
dc.personcode 108636 en_US
dc.personcode 0000058720 en_US
dc.personcode 0000058679 en_US
dc.personcode 0000021558 en_US
dc.personcode 0000058721 en_US
dc.personcode 0000058722 en_US
dc.percentage 100 en_US
dc.classification.name Environmental Science and Management en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords NDVI; SDVI; Scale effect of NDVI; Vegetation fraction retrieval en_US
dc.description.keywords NDVI
dc.description.keywords SDVI
dc.description.keywords Scale effect of NDVI
dc.description.keywords Vegetation fraction retrieval
dc.description.keywords NDVI
dc.description.keywords Scale effect of NDVI
dc.description.keywords SDVI
dc.description.keywords Vegetation fraction retrieval
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - C3


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