Spectral response of water-stressed French bean canopies: measurements and modeling

Yousef Aldakheel; F. Mark Danson

doi:10.1117/12.455134

8 February 2002 Spectral response of water-stressed French bean canopies: measurements and modeling

Yousef Aldakheel, F. Mark Danson

Proceedings Volume 4486, Infrared Spaceborne Remote Sensing IX; (2002) https://doi.org/10.1117/12.455134
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Short term as well as long term water stress has the same effects on plant physiology and canopy architecture. Changes in water status of a canopy can have indirect effects on remotely sensed optical reflectance. This study consists of two inter-related experiments on small canopy under laboratory conditions. The main aim of this study was to study spectral reflectance of water stressed canopies and to implement radiative transfer models to simulate the spectral reflectance of water stressed vegetation. Measurements were taken in the laboratory, which include spectral data and biophysical variables. Results from this research indicated that the pattern of change in both measured and modeled spectral canopy reflectance was similar, but there was a poor fit of the model to the measured canopy reflectance. Overall, this work investigated the relationship between vegetation variables and reflectance of water stressed vegetation and showed that biophysical variables that affect canopy reflectance should be considered carefully in any attempt to implement remote sensing techniques.

Citation Download Citation

Yousef Aldakheel and F. Mark Danson "Spectral response of water-stressed French bean canopies: measurements and modeling", Proc. SPIE 4486, Infrared Spaceborne Remote Sensing IX, (8 February 2002); https://doi.org/10.1117/12.455134

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KEYWORDS

Reflectivity

Vegetation

Remote sensing

Digital Light Processing

Field spectroscopy

Infrared radiation

Infrared sensors

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