NDLI: Estimating Radiation Interception in Heterogeneous Orchards Using High Spatial Resolution Airborne Imagery

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Estimating Radiation Interception in Heterogeneous Orchards Using High Spatial Resolution Airborne Imagery

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Estimating Radiation Interception in Heterogeneous Orchards Using High Spatial Resolution Airborne Imagery

Content Provider	IEEE Xplore Digital Library
Author	Guillen-Climent, M.L. Zarco-Tejada, P.J. Villalobos, F.J.
Copyright Year	2004
Abstract	This letter outlines a method for quantifying the fraction of intercepted photosynthetically active radiation (fIPAR) from high spatial resolution airborne images acquired from an unmanned aerial vehicle. Airborne campaigns provided imagery of peach and citrus orchards using a six-band multispectral camera with 15-cm resolution. At the time of the airborne flights, field measurements of fIPAR taken with a ceptometer and structural data were obtained to characterize the study sites. Measuring fIPAR can be time consuming because of the need to sample for spatial and temporal variability. In this context, remote sensing techniques are useful as they make it possible to assess large areas. There is a lack of studies exploring the use of remote sensing techniques to estimate fIPAR in structurally complex crops. In this letter, the use of high spatial resolution imagery allowed us to classify each study plot into three pure components: vegetation, shaded soil, and sunlit soil. The radiation intercepted by a canopy is determined by the architecture and optical properties of the canopy. Consequently, the fractions of each component and their pure reflectance were used to estimate fIPAR in each study area with rmse = 0.06 for orange orchards and peach orchards.
Sponsorship	IEEE Geoscience and Remote Sensing Society
Starting Page	579
Ending Page	583
Page Count	5
File Size	811175
File Format	PDF
ISSN	1545598X
Volume Number	11
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Soil Vegetation mapping Vegetation Spatial resolution Remote sensing Optical imaging row-structured orchards Fraction of intercepted photosynthetically active radiation (PAR) (IPAR) (fIPAR) orange peach remote sensing
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Geotechnical Engineering and Engineering Geology

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