Assessing the vegetation canopy influences on wind flow using wind tunnel experiments with artificial plants

Journal of Earth system science

Dongyeob Kim2²  Sangjun Im1¹  Youngjoo Hong1¹ 

[1] Department of Forest Sciences, Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.$$;Division of Forest Disaster Management, National Institute of Forest Science, 57 Hoigi-ro, Dongdaemun-gu, Seoul 02455, Republic of Korea.$$

关键词: Wind erosion;    roughness length;    shear velocity ratio;    roughness density;    wind tunnel;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

Wind erosion causes serious problems and considerable threat in most regions of the world. Vegetation on the ground has an important role in controlling wind erosion by covering soil surface and absorbingwind momentum. A set of wind tunnel experiments was performed to quantitatively examine the effect of canopy structure on wind movement. Artificial plastic vegetations with different porosity and canopyshape were introduced as the model canopy. Normalized roughness length $(Z0/H)$ and shear velocity ratio $(R)$ were analyzed as a function of roughness density ($lambda$). Experiments showed that $Z0/H$ increasesand R decreases as λ reaches a maximum value, $lambda_{max}$, while the values of $Z0/H$ and $R$ showed little change with $lambda$ value beyond as $lambda_{max}$.

【 授权许可】

Unknown