厦门植物园空气负离子与PM_(2.5)浓度分布特征  

Distributive Characteristics of Negative Air Ions and PM_(2.5) Concentration in Xiamen Botanical Garden

作　　者：张凤金[1,2] 陈龙清[1] 陈恒彬[2] 

机构地区：[1]华中农业大学园艺林学学院,湖北武汉430070 [2]厦门市园林植物园,福建厦门361003

出　　处：《江西农业学报》2015年第2期37-40,共4页Acta Agriculturae Jiangxi

基　　金：厦门市科技计划项目"优化厦门公园绿地生态保健功能的技术"(3502Z20134061)资助

摘　　要：为了探讨厦门植物园空气负离子浓度和PM2.5浓度在时间和空间上的分布特征,选取了厦门植物园15个观测点及园外1个对照点,在一年四季早、中、晚对他们进行现场实测并进行了分析,结果显示:四季植物园内空气负离子浓度均高于对照点;空气负离子浓度不同季节排序为夏季>秋季>春季>冬季;园内植被与水边、广场之间四季空气负离子浓度均有显著差异,郁闭度高的植被样点空气负离子浓度也较高,不同植物专类园之间空气负离子浓度无显著差异;PM2.5浓度不同季节排序为夏季<冬季<秋季<春季。植被与水边、广场之间四季PM2.5浓度均无显著差异,不同植物专类园之间PM2.5浓度无显著差异。Micro-environment field measurements were conducted to explore the temporal and spatial distributive characteris -tics of negative air ions （NAI） and PM2.5 concentration in Xiamen Botanical Garden in spring , summer, autumn and winter.Fifteen observation points in the botanical garden and a control observation point outside the botanical garden were set .The results were as follows：the NAI concentration at 5 points of the botanical garden was all higher than that at the control point in the four seasons ;the NAI concentration in different seasons showed the order of summer 〉autumn 〉spring 〉winter;there were significant differences in NAI concentration in the four seasons among different land types , such as the vegetation , the waterside and the square , and the NAI concentration at the vegetation point with high canopy density was also higher , but there was no significant difference in NAI concentration among various special plant zones in the botanical garden ;the PM2.5 concentration in different seasons changed in the order of summer 〈winter 〈autumn 〈spring;there were no significant differences in PM 2.5 concentration in the four seasons a-mong different land types and among various special plant zones .

关 键 词：厦门 空气负离子 PM2.5 植物园 分布特征 

分 类 号：X513[环境科学与工程—环境工程]