Title :
Upscale integration of normalized difference vegetation index: the problem of spatial heterogeneity
Author :
Aman, Angora ; Randriamanantena, Heremino P. ; Podaire, Alain ; Frouin, Robert
Author_Institution :
Lab. d´´Etudes et de Recherches en Teledetection Spatiale, Toulouse, France
fDate :
3/1/1992 12:00:00 AM
Abstract :
The correspondence between the normalized difference vegetation index (NDVI) calculated from average reflectances, MNDVI , and NDVI integrated from individual NDVIs, INDVI , by simulating AVHRR data from high spatial resolution SPOT 1 Haute Resolution Visible radiometer and Landsat Thematic Mapper data is analyzed. For the considered sites, located in tropical West Africa and temperate France, and the scales analyzed, 300-1000 m, a strong correlation exists between the two types of index. The relationship is almost perfectly linear, with a slope depending slightly on the variability of the vegetation cover. Effecting the scale change using MNDVI instead of INDVI does not introduce significant errors
Keywords :
ecology; remote sensing; AVHRR data; France; Landsat Thematic Mapper data; SPOT 1 Haute Resolution Visible radiometer; average reflectances; errors; normalized difference vegetation index; simulating; slope; spatial heterogeneity; tropical West Africa; Earth Observing System; Heart rate variability; Land surface; Monitoring; Production; Radiometry; Remote sensing; Satellites; Spatial resolution; Vegetation mapping;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
