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Prediction of leaf chemistry by the use of visible and near infrared reflectance spectroscopy / D.H. Card in Remote sensing of environment, vol 26 n° 2 (01/11/1988)  

Public [article]  inRemote sensing of environment > vol 26 n° 2 (01/11/1988) . - pp 123 - 147 Titre : Prediction of leaf chemistry by the use of visible and near infrared reflectance spectroscopy Type de document : Article/Communication Auteurs : D.H. Card, Auteur ; David L. Peterson, Auteur ; P.A. Matson, Auteur Année de publication : 1988 Article en page(s) : pp 123 - 147 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Alaska (Etats-Unis) [Termes IGN] bande visible [Termes IGN] Californie (Etats-Unis) [Termes IGN] feuille (végétation) [Termes IGN] matière organique [Termes IGN] Pinophyta [Termes IGN] rayonnement proche infrarouge [Termes IGN] réflectance végétale [Termes IGN] spectroscopie [Termes IGN] Wisconsin (Etats-Unis) Numéro de notice : A1988-325 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/0034-4257(88)90092-2 En ligne : https://doi.org/10.1016/0034-4257(88)90092-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=24904 [article]

Remote sensing of forest canopy and leaf biochemical contents / David L. Peterson in Remote sensing of environment, vol 24 n° 1 (February 1988)  

Public [article]  inRemote sensing of environment > vol 24 n° 1 (February 1988) . - pp 85 - 108 Titre : Remote sensing of forest canopy and leaf biochemical contents Type de document : Article/Communication Auteurs : David L. Peterson, Auteur ; P.A. Matson, Auteur ; D.H. Card, Auteur ; et al., Auteur Année de publication : 1988 Article en page(s) : pp 85 - 108 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] absorption [Termes IGN] Alaska (Etats-Unis) [Termes IGN] bande infrarouge [Termes IGN] couvert forestier [Termes IGN] feuille (végétation) [Termes IGN] masse végétale [Termes IGN] Oregon (Etats-Unis) [Termes IGN] réflectance végétale [Termes IGN] Wisconsin (Etats-Unis) Résumé : (auteur) Remote detection and measurement of the nitrogen and lignin contents of forest canopies could allow predictions of biogeochemical processes such as productivity, decomposition, and nutrient turnover rates. Spectral absorption features characteristic of proteins (containing nitrogen), lignin and other leaf constituents occur throughout the shortwave infrared region (1200–2400 nm). The lignin and nitrogen concentration of dried and ground deciduous leaves have been predicted from reflectance spectra obtained in the laboratory. The optimum wavelengths for prediction were selected using stepwise multiple linear regression. The prediction errors were comparable to chemical techniques. Analysis of the reflectance spectra of fresh, whole leaves has been limited thus far to conifer leaves but indicate spectral features predictive of nitrogen and lignin also found in airborne spectra. Airborne Imaging Spectrometer (AIS) were evaluated for whole forest canopy physical and chemical properties. Variations in spectral brightness were associated with variations in total water content of the foliar biomass. Comparison of forest spectra with spectrally flat targets revealed absorption features common to the canopy spectra between 1500 and 1700 nm which were tentatively attributed to absorption by lignin and starch. The AIS and laboratory data indicate strongly that absorption in the infrared region is influenced by biochemical characteristics. Numéro de notice : A1988-030 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/0034-4257(88)90007-7 En ligne : https://doi.org/10.1016/0034-4257(88)90007-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87479 [article]