Author
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PINTER JR, PAUL |
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Submitted to: Agronomy Abstracts
Publication Type: Abstract Only Publication Acceptance Date: 10/23/2000 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: Plant canopy reflectance factors and derived multispectral vegetation indices (Vis) are receiving increased attention in agricultural research as robust surrogates for traditional agronomic parameters. Often viewed simply as measures of plant biomass or green leaf area index, VIs are strongly modulated by interactions of solar radiation with photosynthetically active plant tissues and thus are also indicative of dynamic biophysical properties related to productivity and surface energy balance. The normalized difference vegetation index (NDVI) is used to assess the effects of climate change and estimate net primary productivity on a global basis. Precision agriculture applications are beginning to rely on VAIs in one form or another to quantify with field spatial variability. This presentation will summarize advantages and limitations of different types of Vis in agricultural research, discuss measurement procedures and precautions, and suggest methods to exploit the potential fo Vis more fully. It will also review practical uses of Vis for plant scientists, and propose several novel research applications for agriculture. |
