Journal article
Modelling PRI for water stress detection using radiative transfer models
L Suárez, PJ Zarco-Tejada, JAJ Berni, V González-Dugo, E Fereres
Remote Sensing of Environment | ELSEVIER SCIENCE INC | Published : 2009
Abstract
This paper presents a methodology for water stress detection in crop canopies using a radiative transfer modelling approach and the Photochemical Reflectance Index (PRI). Airborne imagery was acquired with a 6-band multispectral camera yielding 15 cm spatial resolution and 10 nm FWHM over 3 crops comprising two tree-structured orchards and a corn field. The methodology is based on the PRI as a water stress indicator, and a radiative transfer modelling approach to simulate PRI baselines for non-stress conditions as a function of leaf structure, chlorophyll concentration (Cab), and canopy leaf area index (LAI). The simulation work demonstrates that canopy PRI is affected by structural paramete..
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Awarded by Ministry of Communications and Information, Singapore
Funding Acknowledgements
Financial support from the Spanish Ministry of Science and Innovation (MCI) for the projects ACL2005-04049, EXPLORA-INGENIO AGL2006-26038-E/AGR, CONSOLIDER CSD2006-67, and AGL2003-01468 is gratefully acknowledged, and in-kind support provided by Bioiberica through the project PETRI PET2005-0616. Technical support from UAV Navigation and Tetracam Inc. is also acknowledged. M Morales, C. Ruz, G. Sepulcre-Canto, D. Notario, M. Guillen, C. Trapero, I Calatrava, A. Vera and M. Ruiz Bernier are acknowledged for measurements and technical support in field and airborne campaigns.