摘要
兰州市主城区作为兰州市人类活动同大气环境之间进行能量、质量、动量以及水汽交换的主要场所,大气颗粒物的时空分布对兰州市主城区环境产生着重要的影响。本文利用ArcGIS地统计分析和相关性分析对大气颗粒物的时空分布特征以及气象因素对其影响进行了探讨,研究发现:兰州市主城区PM2.5年平均质量浓度变化从2000—2015年整体上呈现出了逐渐降低的趋势。PM2.5空间分布空间污染格局呈现出了片状,带状和点状分布模式。风速和相对湿度对PM2.5质量浓度有着明显的影响。温度和大气压同PM2.5质量浓度不存在明显的相关关系,不是影响兰州市主城区PM2.5污染的直接因素。
引文
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