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Fig.24.2a-f. Relationships between the Normalized Difference Vegetation Index (NDV/)
and several concurrently measured or modeled indices of canopy structure and function.
They are: a Wheat yield, in plots grown at a range of fertilizer inputs (NDVI from an
instrument at 2 m; after Ashcroft et al. 1990), b Aboveground green and total biomass in
grassland (NDVI from an instrument at 1 m; after Gamon et al. 1993), c Leaf area index
estimated from an ecosystem simulation (NDVI from satellite data; after Nemani and
Running 1989b), d Green and total leaf area index in grassland (NDVI from an instrument at 1 m; after Gamon et al. 1993), e Grassland canopy photosynthesis, measured with
an eddy correlation aircraft (NDVI from a spectroradiometer in the aircraft; redrawn
from Desjardins et al. 1992), f Conifer canopy photosynthesis from a cold dry site,
estimated with an ecosystem simulation model. (NDVI from satellite data; based on data
in Running and Nemani 1988)