街区尺度不同绿化覆盖率对PM_(10)、PM_(2.5)的消减研究——以武汉主城区为例  

Effects of Different Green Coverage in Block Scale on PM_(10) and PM_(2.5) Removal——A Case Study of the Main City of Wuhan

作　　者：戴菲[1] 陈明[1] 朱晟伟 陈宏[1] 傅凡 Dai Fei;Chen Ming;Zhu Shengwei;Chen Hong;Fu Fan

机构地区：[1]华中科技大学建筑与城市规划学院 [2]美国南卡罗来纳大学机械工程学院 [3]北方工业大学建筑与艺术学院

出　　处：《中国园林》2018年第3期105-110,共6页Chinese Landscape Architecture

基　　金：国家自然科学基金重点项目(编号51538004);国家自然科学基金面上项目(编号51778254);国家自然科学基金一般项目(编号31570699)共同资助

摘　　要：在城市整体颗粒物空气污染情况下,构成城市肌理的普通街区中PM_(10)、PM_(2.5)浓度存在显著的差异性,绿色基础设施是重要的影响因素。基于武汉市8个国控点与2个课题组自测点的PM_(10)、PM_(2.5)数据,以及遥感影像解译的不同街区绿化覆盖率,探索二者之间的深层量化关系规律。结果表明:在普通的直径1 000m的城市街区中,绿化覆盖率与PM_(10)、PM_(2.5)浓度呈显著负相关关系,绿化覆盖率每提高10%,可分别降低PM_(10)、PM_(2.5)浓度13.83%、7.58%,增加街区尺度的绿化覆盖率能在直径500～600m范围内显著降低PM_(2.5)、PM_(10)浓度。Under the overall particulate air pollution in city,there are significant differences in the concentration of particulate air pollution in urban blocks,and green infrastructure is an important factor.Based on PM10 and PM2.5 data derived from 8 national controlling points and 2 self-controlling points in Wuhan,and green coverage of different blocks interpreted by remotely sensed imagery,the paper explores the deep quantitative rules of them.Results show that in the urban block,green coverage and PM10/PM2.5 concentrations were negatively correlated,and PM10/PM2.5 concentrations can be reduced by 13.83%and 7.58%when green coverage is increased by 10%.When the green coverage is increased in the block,it can significantly reduce PM10 and PM2.5 concentrations in the range of 500~600m.

关 键 词：风景园林 绿色基础设施 绿化覆盖率 街区尺度 PM10 PM2.5 

分 类 号：TU986[建筑科学—城市规划与设计]