TY - JOUR
T1 - Assessing the relationship between spectral vegetation indices and shrub cover in the jornada basin, new mexico
AU - Duncan, J.
AU - Stow, D.
AU - Franklin, J.
AU - Hope, A.
PY - 1993/12
Y1 - 1993/12
N2 - We assessed the statistical relations between spectral vegetation indices (SVIs) derived from SPOT multi-spectral data and semi-arid shrub cover at the Jornada LTER site in New Mexico. Despite a limited range of shrub cover in the sample the analyses resulted in r2 values as high as 0-77. Greenness SVIs (e.g., Simple Ratio, NDVI, SAVI, PVI and an orthogonal Greenness index) were shown to be more sensitive to shrub type and phenology than brightness SVIs (e.g., green, red and near-infrared reflectances and a Brightness index). The results varied substantially with small-scale changes in plot size (60 m by 60 m lo 100 m by 100 m) as a consequence of landscape heterogeneity. The results also indicated the potential for the spectral differentiation of shrub types, and shrubs from grass, using multi-temporal, multi-spectral analysis.
AB - We assessed the statistical relations between spectral vegetation indices (SVIs) derived from SPOT multi-spectral data and semi-arid shrub cover at the Jornada LTER site in New Mexico. Despite a limited range of shrub cover in the sample the analyses resulted in r2 values as high as 0-77. Greenness SVIs (e.g., Simple Ratio, NDVI, SAVI, PVI and an orthogonal Greenness index) were shown to be more sensitive to shrub type and phenology than brightness SVIs (e.g., green, red and near-infrared reflectances and a Brightness index). The results varied substantially with small-scale changes in plot size (60 m by 60 m lo 100 m by 100 m) as a consequence of landscape heterogeneity. The results also indicated the potential for the spectral differentiation of shrub types, and shrubs from grass, using multi-temporal, multi-spectral analysis.
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U2 - 10.1080/01431169308904454
DO - 10.1080/01431169308904454
M3 - Article
AN - SCOPUS:2042434277
SN - 0143-1161
VL - 14
SP - 1
EP - 2
JO - International Journal of Remote Sensing
JF - International Journal of Remote Sensing
IS - 18
ER -