The main purpose of the present study is to clarify the profile of air flow in the canopy layers. In a study of the atmospheric boundary layers, under neutral stabilities, the following basic equations are given in the canopy layers by Takeda (1965):
where τ is the vertical transfer of momentum, ρ the air density, C the constant proportional to the drag coefficient of the individual roughness element, F the leaf-area parameter, u the wind speed, K the eddy diffusivity and α the constant. F denotes the degree of the growth density of vegetation, being assumed to take the value between 0 (without vegetation) and 1 (completely dense growth). From the above equations following secondorder differential equation is obtained:
Geographical review of Japan series A
Geographical review of Japan, Series B.