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Remote estimation of canopy chlorophyll content in crops
Author(s) -
Gitelson Anatoly A.,
Viña Andrés,
Ciganda Verónica,
Rundquist Donald C.,
Arkebauer Timothy J.
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl022688
Subject(s) - canopy , environmental science , chlorophyll , remote sensing , plant canopy , nitrogen , agronomy , vegetation (pathology) , fertilizer , estimation , atmospheric sciences , ecology , botany , biology , geography , chemistry , geology , management , economics , medicine , organic chemistry , pathology
Accurate estimation of spatially distributed chlorophyll content (Chl) in crops is of great importance for regional and global studies of carbon balance and responses to fertilizer (e.g., nitrogen) application. In this paper a recently developed conceptual model was applied for remotely estimating Chl in maize and soybean canopies. We tuned the spectral regions to be included in the model, according to the optical characteristics of the crops studied, and showed that the developed technique allowed accurate estimation of total Chl in both crops, explaining more than 92% of Chl variation. This new technique shows great potential for remotely tracking the physiological status of crops, with contrasting canopy architectures, and their responses to environmental changes.