地理学評論
Online ISSN : 2185-1719
Print ISSN : 0016-7444
ISSN-L : 0016-7444
植物群落内風速プロファイルの数値解
林 陽生
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ジャーナル フリー

1980 年 53 巻 6 号 p. 389-395

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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:

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