Plant Species Selection Based on Leaf Vibration Experiments

2018 3rd International Conference on Building Materials and Construction

土木建筑工程

Li, Mengmeng^1 ; Kang, Jian^1,2

Hei-Long-Jiang Cold Region Architectural Science Key Laboratory, School of Architecture, Harbin Institute of Technology, Harbin, China^1

UCL Institute for Environmental Design and Engineering, Bartlett, University College London, London

WC1H 0NN, United Kingdom^2

关键词: Ecological environments;    Leaf thickness;    Noise reduction effect;    Rapid urban development;    Sound attenuation;    Urban landscape;    Vibration amplitude;    Vibration experiment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/371/1/012038/pdf
DOI  :  10.1088/1757-899X/371/1/012038

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Noise pollution is exacerbated by the rapid urban development. Noise has a serious impact on both people's life and cities' ecological environment. Noise should be controlled immediately. Plants are one of the natural noise-reducing materials, which becomes increasingly important and popular. In urban landscape design, it is very important to select the plant species which have good noise reduction effect. The aim of this paper is to find out the characteristics of the plants with good noise reduction effect and apply it in urban landscape design. In this study, an experiment of sound attenuation by plants focusing on leaf vibration is carried out. This study investigates the vibration of leaves of 6 plant species in a sound field using a Keyence (IG- 1000/CCD) Laser Micrometre. The results show that the vibration amplitudes of plant leaves increase significantly by about 4-12 μm after being stimulated by sound. In addition, driven by the same sound, the amplitudes of all leaves varied with the difference of leaf thickness, leaf area and leaf mass. The amplitudes of all leaves increase with the increase of leaf area and leaf mass, while decrease with the increase of leaf thickness.