基于PM_(2.5)消减的街旁绿地植物空间配置模式研究——以苏州工业园区为例  

Spatial Pattern of Plants in Streetside Green Space Based on PM_(2.5 )Reduction:A Case Study of Suzhou Industrial Park

作　　者：徐安祺 初步天 肖湘东 姜佳怡 XU Anqi;CHU Butian;XIAO Xiangdong;JIANG Jiayi

机构地区：[1]苏州大学金螳螂建筑学院,苏州215006 [2]苏州大学金螳螂建筑学院风景园林系,苏州215006

出　　处：《中国园林》2023年第2期90-95,共6页Chinese Landscape Architecture

基　　金：国家自然科学基金项目“基于局部气候区尺度下的植物景观响应热岛效应机制和优化设计研究——以长三角城市为例”(编号52178046)资助。

摘　　要：通过连续监测苏州市工业园区现代大道30块街旁绿地内PM_(2.5)的质量浓度、群落微气候因子及植物结构因子,探究城市街旁绿地的PM_(2.5)浓度消减能力,并从颗粒物消减视角提出城市街旁绿地优化设计策略。结果表明:1)植株郁闭度、种植密度、常绿植株数量占比与PM_(2.5)浓度都呈显著正相关关系;2)PM_(2.5)浓度与相对湿度呈显著正相关关系,与空气温度呈负相关关系,在研究中应将两者统筹兼顾,缺一不可,PM_(2.5)浓度的日变化趋势为早晨、上午、傍晚浓度值高,变化趋势曲线呈现“U”字形;3)在绿地空间植物配置中,多选用当地的乡土树种和优势树种进行种植。在植物配置模式中,“乔灌草-乔灌”多层种植模式的消减作用最强,能有效消减绿地PM_(2.5)浓度。研究结果为城市绿地的系统布局提供较有效的布置建议,为城市生态环境建设提供了思路和参照。The mass concentration of PM_(2.5),community microclimate factors and plant structure factors in 30 blocks of streetside green space on the Modern Avenue in Suzhou Industrial Park were monitored continuously from July 2020 to August 2020,to explore the PM_(2.5) concentration reduction capacity of urban streetside green space and propose an optimal design strategy for urban streetside green space allocation from the perspective of particle reduction The results showed that:1) Plant closure,planting density,and proportion of evergreen plants were positively correlated with PM_(2.5) concentration,and were significantly correlated 2) PM_(2.5) concentration and relative humidity show a significant positive correlation relationship,and the air temperature is negatively correlated,and the two should be taken into account in the study and both are indispensable.The daily variation characteristics of PM_(2.5) concentration are basically high concentration values in the morning,before the noon,and evening,and the curve is "U-shaped".3) In the configuratioin of green space plants,more local dominant tree species and local tree species are selected for planting.Among the plant configuration modes,the multilayer planting mode of arbor/shrub/grass-arbor/shrub" has the strongest reduction effect,which can effectively reduce the PM_(2.5) concentration of green space.The research results provide the most efficient layout for the systematic layout of urban green space,and provide ideas and references for the construction of urban ecological environment.

关 键 词：风景园林 街旁绿地 植物群落 PM_(2.5)浓度 配置模式 

分 类 号：TU986[建筑科学—城市规划与设计]