NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Reflectance spectroscopy of fresh whole leaves for the estimation of chemical concentrationRemotely sensed plant-canopy data in the visible and near-IR ranges are used to establish relations between the canopy reflectance and the chemical content of the leaves. The mathematical relation is generated by means of stepwise regression based on the derivative reflectance at certain wavelengths. Fourier filtering and sample control are used to minimize instrument noise and spectral overlap respectively, and absorption features are noted that correspond to sugar and protein. The coefficients of determination between estimated and measured concentrations are at least 0.82 for such substances as starch and chlorophyll. It is recommended in the analysis of remotly sensed canopy data that the chemicals with strong spectral overlaps with the chemical of interest be accounted for in order to estimate foliar chemical concentrations accurately.
Document ID
19920043717
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Curran, Paul J.
(Swansea, University College, United Kingdom)
Dungan, Jennifer L.
(NASA Ames Research Center; TGS Technology, Inc. Moffett Field, CA, United States)
Macler, Bruce A.
(EPA, Drinking Water Branch W-6-1, San Francisco CA, United States)
Plummer, Stephen E.
(British National Space Centre Huntingdon, United Kingdom)
Peterson, David L.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
February 1, 1992
Publication Information
Publication: Remote Sensing of Environment
Volume: 39
ISSN: 0034-4257
Subject Category
Earth Resources And Remote Sensing
Accession Number
92A26341
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available