干旱区地理2025，Vol.48Issue(5)：778-788,11.DOI:10.12118/j.issn.1000-6060.2024.381
基于通径分析的树木园不同植物群落空气负离子变化特征
Change characteristics of negative air ions of different plant communities in arboretum based on path analysis
摘要
Abstract
To investigate the changes in negative air ion concentration(NAIC)and the influencing factors within typical plant communities in an arboretum,this study examined the Hohhot arboretum in Hohhot City,Inner Mon-golia Autonomous Region,China.Data were collected during five sunny and windless or breezy days in each sea-son from 2022 to 2023.Observations included 11 different plant communities and the environmental indicators of control sites,recorded simultaneously in the field from 08:00 to 18:00.The environmental indicators of the con-trol points were analyzed and compared to the NAIC patterns across different plant communities to identify the factors that influenced NAIC.The results showed the following.(1)The NAIC levels of arboretum plant commu-nities were significantly higher during spring(611-1115 ions·cm-3),summer(714-1033 ions·cm-3),and au-tumn(678-1120 ions·cm-3)compared to that during winter(202-372 ions·cm-3).However,no significant differ-ence was observed within the same season.Daily NAIC patterns varied by season.They formed a"U"curve in spring,showed fluctuating changes in summer and autumn,and decreased before increasing in winter.Daily max-imum or minimum NAIC values occurred in specific plant communities and varied seasonally.(2)The air cleanli-ness of plant communities reached the cleanest level during spring,summer,and autumn.During winter,the air cleanliness ranged from clean to acceptable for most observation periods.(3)The influence of environmental fac-tors on the NAIC varied across seasons.PM2.5 and PM1.0 were identified as the primary factors affecting NAIC.Variations in the NAIC were primarily attributed to the direct effects of particulate matter of different sizes in the air.关键词
树木园/植物群落/空气负离子/环境因子/通径分析Key words
arboretum/plant community/negative air ions/environmental factors/path analysis引用本文复制引用
闫晓云,孙艺玮,包红光..基于通径分析的树木园不同植物群落空气负离子变化特征[J].干旱区地理,2025,48(5):778-788,11.基金项目
内蒙古自然科学基金博士基金项目(2019BS03018) （2019BS03018）
内蒙古农业大学青年教师科研能力提升专项(BR220132)资助 （BR220132）
