|Table of Contents|

Spatio-temporal Variation of Negative Ions and PM2.5 Concentrations in Elsholtzia stauntonii Community

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年11
Page:
83-90
Research Field:
Publishing date:

Info

Title:
Spatio-temporal Variation of Negative Ions and PM2.5 Concentrations in Elsholtzia stauntonii Community
Author(s):
HAN Yang1; ZHOU Xiumei1; 2; CHEN Chaoping1; LI Baoyin1; 2
(1.School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang,Henan 453003；2.Henan Research Center for Horticultural Plant Resources Utilization and Germplasm Innovation Engineering,Xinxiang,Henan 453003)
Keywords:
E.stauntonii Benth.; air negative ion; PM2.5; spatio-temporal variation; flowering process; affecting factors
PACS:
-
DOI:
10.11937/bfyy.20193780
Abstract:
Elsholtzia stauntonii Benth. with fragrance was used as the experimental material to measure the air negative ion concentrations,PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 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 PM2.5 was negatively correlated with temperature,and positively correlated with humidity and light intensity,and the correlation with humidity reached a significant level.

References:

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Last Update: 2020-08-12