Assessment of spectral vegetation indices for riparian vegetation in the Colorado River delta, Mexico

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dc.contributor.author Nagler, Pamela en_US
dc.contributor.author Glenn, Edward en_US
dc.contributor.author Huete, Alfredo en_US
dc.contributor.editor en_US
dc.date.accessioned 2010-05-28T09:43:45Z
dc.date.available 2010-05-28T09:43:45Z
dc.date.issued 2001 en_US
dc.identifier 2009001176 en_US
dc.identifier.citation Nagler Pamela, Glenn Edward, and Huete Alfredo 2001, 'Assessment of spectral vegetation indices for riparian vegetation in the Colorado River delta, Mexico', Elsevier, vol. 49, pp. 91-110. en_US
dc.identifier.issn 0140-1963 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/8521
dc.description.abstract This study tested the relationship between three, commonly-used vegetation indices (VIs), percent vegetation cover (% cover) and leaf area index (LAI) over a complex riparian landscape in the Colorado River delta, Mexico. Our objective was to correlate vegetation and soil features with VIs using low-level aerial photography, in preparation for scaling up to analysis of vegetation features using satellite imagery. We used a three-band digital imaging camera (Dycam) to collect data from an aircraft flying at 150 m. A series of 84 images (67?100 m) were analysed. Nine of these sites were ground-truthed; the species, % cover, and LAI were determined. Measured LAI (nine sites) from tree, shrub, and groundcover categories were used to determine a global (GLAI) value for 63 images. We conducted both VIs:% cover and VIs:GLAI regression analyses. The normalized difference vegetation index (NDVI) was the VI that best predicted % cover (r2=0?837), but the soil adjusted vegetation index (SAVI) and enhanced vegetation index (EVI) gave nearly equal results (r2=0?807 and 0?796, respectively). Normalized difference vegetation index, SAVI and EVI were less useful in predicting GLAI (r2=0?73, 0?65, 0?64, respectively). en_US
dc.language en_US
dc.publisher Elsevier en_US
dc.relation.isbasedon http://dx.doi.org/10.1006/jare.2001.0844 en_US
dc.title Assessment of spectral vegetation indices for riparian vegetation in the Colorado River delta, Mexico en_US
dc.parent Journal Of Arid Environments en_US
dc.journal.volume 49 en_US
dc.journal.number en_US
dc.publocation United States en_US
dc.identifier.startpage 91 en_US
dc.identifier.endpage 110 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 040600 en_US
dc.personcode 0000054080 en_US
dc.personcode 0000054081 en_US
dc.personcode 108636 en_US
dc.percentage 100 en_US
dc.classification.name Physical Geography and Environmental Geoscience 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 Riparian vegetation; percent cover; aerial/satellite images; normalized difference vegetation index (NDVI); leaf area index (LAI) en_US
dc.staffid 108636 en_US


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