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当前位置: 首页 > 文章 > 基于LUR模型的城市带状绿地冬季降减空气PM10和PM2.5效应研究 华中农业大学学报 2024,43 (6) 150-160
Position: Home > Articles > Effects of urban greenbelt on mitigating PM10 and PM2.5 in winter based on land use regression(LUR)model Journal of Huazhong Agricultural University 2024,43 (6) 150-160

基于LUR模型的城市带状绿地冬季降减空气PM10和PM2.5效应研究

作  者：
孙伊湄;朱春阳
单  位：
华中农业大学园艺林学学院
关键词：
城市带状绿地;宽度效应;空气颗粒物;LUR模型;城市交通
摘  要：
为探究城市带状绿地降减空气颗粒物的作用机制和效应,选取武汉市罗家港带状公园绿地及其周边建成环境作为研究对象,选择冬季天气晴朗无风且气象条件相似的3天进行重复观测,采用土地利用回归(land use regression,LUR)模型和主成分分析相结合的方法,分析冬季城市带状绿地对空气PM10和PM2.5质量浓度的降减效应,识别其关键影响因素.结果显示,基于LUR模型得出城市带状绿地对空气PM10和PM2.5的降减作用存在宽度效应,宽度30~40 m的绿地在冬季对空气PM10的降减效率最显著.同时,研究发现冬季城市带状绿地内部的空气PM2.5和PM10质量浓度会出现高于邻近道路位置的现象,空气PM10和PM2.5在城市带状绿地内存在明显的积聚效应.结果表明,城市带状绿地对空气PM10和PM2.5的降减作用会受到周边交通污染排放的干扰,不同宽度带状绿地创造的微气象条件也会对空气PM10和PM2.5的质量浓度产生一定影响.
译  名：
Effects of urban greenbelt on mitigating PM10 and PM2.5 in winter based on land use regression(LUR)model
关键词：
urban greenbelt%width effect%particulate matter in air%land use regression(LUR)mod-el%urban traffic
摘  要：
The green space of Luojiagang Greenbelt Park in Wuhan and its surrounding built environ-ment were used to study the mechanism and effect of urban greenbelts on reducing particulate matter in the air.Three days with clear and windless weather and similar meteorological conditions in winter were repeat-edly observed.A combination of land use regression(LUR)model and principal component analysis(PCA)was used to analyze the effect of urban greenbelt on mitigating the concentration of PM10 and PM2.5 in the air in winter and identify the key influencing factors.The results showed that there was a width effect of urban greenbelt on mitigating the PM10 and PM2.5 in the air in winter based on the LUR model.The green space with a width of 30-40 meters had the most significant mitigation efficiency of PM10 in the air in winter.In winter,the concentration of PM10 and PM2.5 in the air inside urban greenbelt was higher than that in adjacent road locations.There was a significant accumulation effect of PM10 and PM2.5 in the air in urban greenbelt.It is indicated that the effect of urban greenbelt on mitigating the PM10 and PM2.5 in the air was disturbed by emissions of surrounding traffic pollution.The micro-meteorological conditions created by green spaces of different widths can have a certain impact on the concentration of PM10 and PM2.5 in the air.

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