20. EXPERIMENTAL STUDY OF STATISTICAL
CHARACTERISTICS OF PLANT CANOPY RADIATION REGIME
199
5.
ACKNOWLEDGEMENTS
We thank Prof. Lars Christersson and Assistant Prof. Kurth Perttu for
their constructive comments, Peeter Saarelaid, Enn-Märt Maasik and Maido
Sulev for assistance in field measurements and data processing. This
research was supported by ETSA Grant No 251, ISF Grants No LGG 000
and LKG 100 PECO-NIS-LTEEF project, Supplementary Agreement No
ERB-CIPDCT94-0012.
6.
REFERENCES
Allen, L.H. and Lemon, E.R. (1972) Net radiation frequency distribution in a corn crop,
Boundary Layer Meteorology, 3, 246–254.
Baldocchi, D.D., Matt, D.R., Hutchison, B.A., and McMillan, R.T. (1984) Solar radiation
within an oak-hickory forest: An evaluation of the extinction coefficient for several
radiation components during fully-leafed and leafless periods, Agricultural and Forest
Meteorology, 32, 307–322.