Research on the Comprehensive Noise Reduction Effectiveness of Plant Communities in Urban Green Spaces  

城市绿地植物群落综合降噪效能研究

作　　者：Jiayi LU Yinran XIAO Yuhan SHAO Ying WANG(TRANSLATED) 陆嘉宜;肖茵然;邵钰涵;王颖(翻译)(同济大学建筑与城市规划学院景观学系,上海200092;不详)

机构地区：[1]Department of Landscape Architecture,College of Architecture and Urban Planning,Tongji University,Shanghai 200092,China [2]不详

出　　处：《景观设计学(中英文)》2025年第1期76-100,共25页Landscape Architecture Frontiers

基　　金：科技部重点研发计划(编号:2023YFC3805303);上海市自然科学基金项目(编号:24ZR1469800);教育部生态化重点实验室项目(编号:CAUP-UD-06)。

摘　　要：Noise pollution significantly impacts people’s health and quality of life,while urban green spaces not only beautify the environment but also play a crucial role in noise reduction and sound absorption.This study,using the plant communities of waterfront green spaces along Suzhou Creek in Shanghai as a case,innovatively develops a comprehensive evaluation system for physical and psychological noise reduction effectiveness,with 13 indicators.Through field measurements and surveys of 14 urban green spaces with different plant community characteristics,the study found that physical noise reduction effectiveness is closely related to plant species richness and vertical canopy density.Densely planted trees with thick trunks and tall shrubs significantly improve physical noise reduction effectiveness.When the vertical canopy density is less than 35%,the physical noise reduction effectiveness of waterfront plant communities(with 70%vegetation cover and 30%water cover)outperforms that of terrestrial plant communities(with no water cover)at the same canopy density level.For psychological noise reduction,increasing shrub crown width,height,and spacing improves visual perception,while enhancing vertical canopy density enriches auditory perception-both of which raise the auditory annoyance threshold.The most effective plant community combination for comprehensive noise reduction is a mix of densely planted trees,shrubs,and ground cover.The noise reduction effectiveness of a waterfront plant community is impacted by vertical canopy density.When it reaches 40%or more,the psychological noise reduction effectiveness will improve as the density increases.This study provides theoretical support and practical guidance for addressing noise issues in urban green spaces and optimizing plant community configurations.噪声污染严重影响人们的健康和生活质量,而城市绿地不仅美化环境,还起到降噪吸声的重要作用。本研究以上海苏州河滨水绿地植物群落为例,创新性地构建了基于物理与心理降噪效能的综合评估体系,共包括13项评价指标。通过对14个具有不同植物群落特征的城市绿地进行实地测量和问卷调查,研究发现,植物群落的物理降噪效能与植物物种丰富度、垂直郁闭度密切相关,密植且枝干较大的乔木和高大灌木能显著增强物理降噪效能。当垂直郁闭度小于35%时,相同郁闭度下,滨水植物群落(植被占比70%、水面占比30%)的物理降噪效能优于陆域植物群落(不包含水面要素)。在心理降噪效能方面,增加灌木的冠幅、高度和间距有助于提升视觉感知;增加垂直郁闭度则能提升听觉感知的丰富度,两者均有助于提高听觉烦恼度阈值。综合降噪效能最佳的植物群落类型为密植乔木与灌木及地被的组合,而滨水植物群落的降噪效能受到垂直郁闭度变化的影响,当垂直郁闭度不低于40%时,可通过提升郁闭度来优化心理降噪效能。研究为改善城市绿地空间中的噪声问题提供了理论支持和实践指导,有助于优化城市绿地植物群落配置。

关 键 词：Urban Waterfront Green Space Physical Noise Reduction Psychological Noise Reduction Comprehensive Noise Reduction Effectiveness Plant Community Configuration 

分 类 号：TU984[建筑科学—城市规划与设计] S731.2[农业科学—林学]