Interpretation of reflectance spectra by plant physiological parameters
Spectral signatures of the C3 plant wheat (Triticum aestivum) were compared with those of the C4 plant maize (Zea mays). The reflectance spectra were taken with the IRIS spectroradiometer in the region between 400 nm and 2400 nm. In addition, physiological parameters such as water potential, photosynthetic activity (C0(2) - gas exchange) and pigment concentration of the samples were determined using the classical instrumentation of plant physiology. Changes in several bands of the reflectance spectra are compared with changes of these physiological parameters. An attempt was made to transfer the results of the laboratory measurements, performed under controlled environmental conditions, to data acquired in the field over canopies of the same plant types. A critical analysis of the overall approach is reported.
Bibliographic Reference: Paper presented: IGARSS '91, Espoo (FI), June 3-6, 1991
Availability: Available from (1) as Paper EN 36039 ORA
Record Number: 199111593 / Last updated on: 1994-12-02
Original language: en
Available languages: en