Full text: Proceedings of the international symposium on remote sensing for observation and inventory of earth resources and the endangered environment (Volume 1)

    
  
REMOTE SENSING OF SOME FOREST DAMAGED PLANTS BY FALSE COLOUR 
PHOTOGRAPHY, SPECTRORADIOMETRY VISIBLE. AND NEAR I.R. 
G.Larcher and N. Anthore, Laboratoire d'Optique Physique*, 
Institut Scientifique de Haute Normandie et U.E.R. Sciences, 
Mont-Saint-Aignan, France 
Résumé 
  
1. L'interprétation de diapositives en fausse-couleur prises 
d'hélicoptère a permis d'établir une carte des dépérissements de la 
forêt de Roumare située en bordure de la zone industrielle, près 
de Rouen (de 1973 à 1977). 
2. Les mesures de distributionsspectrales relatives de réflectance 
de végétaux forestiers sains et nécrosés (fougère, hêtre, chêne, 
bouleau) au laboratoire et @n situ ont permis de mettre en évidence 
des paramètres significatifs de dépérissement. 
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3. Mise au point d'un spectroradiométre rapide à dix bandes, 
embarquable à bord d'un hélicoptére ; choix des bandes spectrales 
utiles ; premiers résultats. 
Abstract 
1. The data collected by means of false color aerial photography 
(from helicopter) in order to detect and to evaluate the damages in the 
Roumare forest, bordering the intensively urbanized and industrialised 
Roumare area, allow us to obtain a large-scale detailed study and to 
draw. up a map of the damaged forest (1973-1977). 
2. Measurements of the relative spectral distribution of reflected 
energy by oak, birch, beech and bracken leaves for several sanitary 
states -in Laboratory and in situ- allow us to make appear significant 
parameters of decay. 
3. We have built a prototype of ten spectral bands spectroradio- 
meter with short time storage of data, which can be takenon board of 
an helicopter ; selection of profitable spectral bands, first results. 
* Groupe du Laboratoire Associé au C.N.R.S. n°230. Professeur 
Madame ROUSSEAU.
	        
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