A beam-emission experiment using a Monte Carlo technqiue was attempted in a computer model for the random distribution (RD)
of foliage. The RD foliage consisted of 500 leaves of the same size, their individual areas being just 1/100 of the unit land
area; i.e., a leaf area index (LAI) of RD foliage was equal to 5. Satisfactory agreement of light transmission under a uniform
overcast sky was obtained between the observed values in the RD foliage and theoretical anticipations for any leaf inclination
angle and/or leaf area density. This result demonstrated the usefulness of the Monte Carlo technique adopted in this experiment.
The Monte Carlo experiment was also applied to a patch-like population. For such a foliage, additional effect of lateral incidence
were worth noting in contrast with the microclimates in the corresponding infinite foliage. For every leaf inclination angle
the mean light flux density below the middle stratum within a patch-like population was not further attenuate with increasing
LAI.