Abstract
From the reflectance spectra R( ), the absolute value R710 at 710 nm , the ratios G/R = R560/R660 and IR/R = 766' the position re of the inflection point at the red edge, and the chroniaticity point are derived. The photosynthetic system (PS) is characterized by the fluorescence induction kinetics which provides the parameters Rfd and V0 for the estimate of the potential photosynthetic capacity and the chlorophyll concentration, respectively. Measurements obtained from spruce, birch, oak, and poplar of different damage class and color show correlations between the reflectance-S and fluorescence-characteristics. The chroinaticity points provide a two-dimensional analysis which may improve the separation between affected and healthy trees.
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