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当前位置: 首页 > 文章 > 木香薷群落负离子及PM_(2.5)浓度的时空变化及其影响因素 北方园艺 2020 (11) 83-90
Position: Home > Articles > Spatio-temporal Variation of Negative Ions and PM_(2.5) Concentrations in Elsholtzia stauntonii Community Northern Horticulture 2020 (11) 83-90

木香薷群落负离子及PM_(2.5)浓度的时空变化及其影响因素

作  者：
韩阳;周秀梅;陈超萍;李保印
单  位：
关键词：
木香薷;空气负离子;PM_(2.5);时空变化;开花进程;影响因素
摘  要：
以木香薷为试材,对开花进程中、一天中不同时间及仪器进气口距植株顶部不同高度处的空气负离子、PM_(2.5)浓度、气象因子进行测定,以期探究芳香植物木香薷群落负离子及PM_(2.5)浓度的时空变化特征及其影响因素。结果表明:开花进程中木香薷群落负离子浓度由低到高的变化顺序依次为初花期<盛花期<末花期;开花进程中PM_(2.5)浓度由高到低依次为初花期>盛花期>末花期;木香薷群落负离子浓度的最高值出现在17:00,最低值出现在15:00;PM_(2.5)浓度最高值出现在11:00,最低值出现在17:00;仪器进气口距植株顶部15 cm处空气负离子浓度高于45 cm处的浓度,二者相差90.5 ion·cm~(-3),而不同位置处的PM_(2.5)浓度差值仅0.6μg·m~(-3),即群落负离子浓度受位置变化影响较大,PM_(2.5)浓度则受影响较小;木香薷群落负离子浓度与温度、光照强度均呈极显著负相关,而与湿度呈极显著正相关,且直线回归表明负离子浓度与各气象因子的相关性从强到弱依次为湿度>温度>光照强度;PM_(2.5)浓度与温度呈显著负相关,与湿度、光照强度均呈正相关,且与湿度的相关性达到极显著水平。
译  名：
Spatio-temporal Variation of Negative Ions and PM_(2.5) Concentrations in Elsholtzia stauntonii Community
作  者：
HAN Yang;ZHOU Xiumei;CHEN Chaoping;LI Baoyin;School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology;Henan Research Center for Horticultural Plant Resources Utilization and Germplasm Innovation Engineering;
关键词：
E.stauntonii Benth.;;air negative ion;;PM_(2.5);;spatio-temporal variation;;flowering process;;affecting factors
摘  要：
Elsholtzia stauntonii Benth. with fragrance was used as the experimental material to measure the air negative ion concentrations,PM_(2.5) concentrations,temperature,humidity and light intensity at different flowering stages,different measuring times of the day and different heights from the machine′s air inlet to the top of the plants.In order to explore the temporal and spatial variation characteristic of negative ion and PM_(2.5) concentrations and its influencing factors in aromatic plants communities.The results showed that from low to high,the concentrations of negative ion in different flowering processes were early flowering stagefull flowering stage>late flowering stage.During all the day,the highest negative ion concentration appeared at 17:00.And the lowest negative ion concentration appeared at 15:00.The highest PM_(2.5) concentration occurred at 11:00,and the lowest at 17:00.The concentrations of negative ions at 15 cm from the machine′s air inlet to the top of the plants were higher than that at 45 cm,with a difference of 90.5 ion·cm~(-3).There was no significant difference in PM_(2.5) concentration at different positions,with a difference of only 0.6 μg·m~(-3).The concentration of negative ions in the community was significantly negatively correlated with temperature and light intensity,and was significantly positively correlated with humidity.And linear regression shows that the correlation between negative ion concentration and various meteorological factors from strong to weak was humidity>temperature>light intensity.The concentration of PM_(2.5) was negatively correlated with temperature,and positively correlated with humidity and light intensity,and the correlation with humidity reached a significant level.

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