1摘 要大气中 PM2.5的污染特征分析是大气污染的防控的科学基础及重要依据。本文根据福建省 2015-2019 年大气中 PM2.5的质量浓度月均值，分析大气中细颗粒物的浓度的时空特征及其影响因素，本课题主要研究内容和研究结果有：（1）对福建省环境质量月报进行的研究性分析，根据月度变化，季节性变化以及年际变化，从而得出福建省 PM2.5的变化特征以及时空分布特征。（2）福建省 PM2.5的质量浓度变化存在明显的时空变化现象。总体大气状况以优良为主，春天污染比较严重，其次是冬天与夏天，秋天的污染最轻。同时，根据大气指数可以观察到福建省沿海地区的污染程度会高于内陆地区。（3）通过数据分析和影响因素的分析，可以得出 PM2.5的质量浓度与气温、风速、极端天气、降雨量以及湿度有着很大的关系，与气温呈负相关，极端天气在一定程度上对污染有一定的缓解作用，相对湿度及降雨量呈负相关。关键词：PM2.5；质量浓度；污染特征；影响因素；雾霾Abstract2The analysis of PM2.5 pollution characteristics in the atmosphere can provide scientific basis for the prevention and control of air pollution. Based on the monthly mean of PM2.5mass concentration in the atmosphere from 2015 to 2019 in fujian province, this paper analyzed the temporal and spatial characteristics of the concentration of fine particulate matter in the atmosphere and its influencing factors. The main research contents and results obtained are as follows:(1) A research-based analysis of the monthly environmental quality report of fujian province was conducted to obtain the change characteristics and spatial and temporal distribution characteristics of PM2.5 in fujian province based on the monthly, seasonal and annual changes.(2) There is a significant spatiotemporal change in the PM2.5 mass concentration in Fujian Province. The overall atmospheric condition is mainly good, with more serious pollution in spring, followed by winter and summer, and the lightest pollution in autumn. At the same time, according to the a...
