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A modelling study of BRDF canopy and radiation regime for boreal forests

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6 Author(s)
Zagolski, F. ; PRIVATEERS N.V., St. Maarten, Netherlands ; Guillevic, P. ; Gastellu-Etchegorry, J.P. ; Gaillard, C.
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This paper presents a new radiative transfer modelling approach, for retrieving information on forest structural characteristics and photosynthetic activity, both directly through an accurate computation of 3D photosynthetically active radiation (PAR) regime, and indirectly with the simulation of remote sensing measurements. The DART model was used for investigating spectral behavior and PAR environment of boreal forest in Canada. The main features of BRDF (bidirectional reflectance factor distribution) anisotropy are clearly comparison between simulated and (PARABOLA, CASI, POLDER) BRDFs stresses the potential of DART, but also the importance and difficulty to use accurate field data. Differences in forest architectures induce distinct PAR transmission and 3D absorbed PAR (APAR), and their influence on canopy photosynthesis is illustrated with the coupling of the DART model with a leaf model

Published in:

Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International  (Volume:4 )

Date of Conference:

3-8 Aug 1997