不同园林绿地类型内空气PM_(2.5)浓度的动态变化及其滞尘效应分析  

DYNAMIC VARIATION OF AIR PM_(2.5) CONCENTRATION IN DIFFERENT GREENLAND TYPES AND ANALYSIS OF DUST REMOVAL EFFECT

作　　者：汪结明[1,2] 王良桂[1] 朱柯铖杰 李瑞雪[2] 韩改改 

机构地区：[1]南京林业大学风景园林学院,南京210037 [2]湖南科技大学生命科学学院,湖南湘潭411201 [3]南京外国语学校,南京210037

出　　处：《环境工程》2016年第7期120-124,共5页Environmental Engineering

基　　金：科技部十二五科技支撑计划(2013BA001B06);江苏省农业科技自主创新资金关键技术攻关类项目CX(14)2031

摘　　要：通过对不同园林绿地类型内空气PM_(2.5)的检测,结果发现:PM_(2.5)浓度日变化规律均呈现早晚高午间低的双峰单谷型趋势。各绿地类型内空气PM_(2.5)浓度10月最低,8月最高。全年空气PM_(2.5)浓度均值从大至小依次为夏季>冬季>春季>秋季。不同天气状况下空气PM_(2.5)浓度的大小排序依次为阴天>晴天>雨天>雨后天晴。复混的植被结构对空气颗粒物的滞尘能力大于单一的植被结构,按滞尘能力大小排序依次为阔叶乔灌草、针叶乔灌草、阔叶乔草、灌木草坪、草坪。The air PM_（2.5）concentration in different greenland types were detected,the results showed that the trend of daily variation was the single valley and bimodal,the PM_（2.5）concentrations in the morning were higher than that in the evening. The PM_（2.5）concentrations in air in different greenland types were always the lowest in October,and the highest in August. The average concentration of PM_（2.5）in different seasons from high to low was the summer,winter,spring and autumn. The PM_（2.5）concentrations in air under different weather conditions from high to low were cloudy,sunny,rainy,sunny after rainy. The composite vegetation structure for reducing air particulate matter pollution was better than single vegetation structure,the order from high to low was deciduous tree shrub-herb,evergreen tree-herb,deciduous tree-herb,shrub-herb,herb according to the ability dust removal.

关 键 词：园林绿地类型 PM2.5 日变化 年变化 滞尘效应 

分 类 号：X513[环境科学与工程—环境工程]