淄博市城区采暖期PM_(2.5)污染水平的GIS分析

GIS Analysis on PM_(2.5) Pollution during Heating Period in Zibo

目的分析淄博市城区采暖期PM2.5质量浓度的区域分布,评估PM2.5污染水平,为环保决策和疾病预防提供技术依据。方法根据山东省环境信息与监控中心发布的城市空气质量数据,选取采暖期2013年11月—2014年3月的数据,基于GIS进行空间描述分析。结果淄博市城区采暖期PM2.5的平均质量浓度和最高质量浓度分别为126和525μg/m3,超标1.68倍和7倍;PM2.5作为首要污染物的构成达69.89%,且PM2.5作为首要污染物的构成均有随着环境空气质量的恶化而升高的趋势;周村区和张店区为PM2.5日均质量浓度和首要污染物构成的较高区域。结论淄博市城区采暖期PM2.5污染较为严重,周村区和张店区是重点关注区域,具有潜在的健康风险,应引起政府相关部门的重视。

Objective To analyse the regional distribution of PM2. 5pollution and assess the level of PM2. 5in Zibo city during heating period to provide technical basis for decision-making on environmental protection and disease prevention. Methods According to the information from Environmental Monitoring Center in Shandong Province,a descriptive spatial analysis based on GIS on the quality of urban air during heating period was conducted from November in 2013 to March in 2014. Results The average and the highest concentration of PM2. 5in heating period in Zibo City were 126μg / m3 and 525μg / m3,respectively,which were 1. 68 and 7 times higher than the standard limit（ 75 μg / m3）. The constitution of PM2. 5as the primary pollutant accounted for 69. 89% of air pollutants; and there was a trend of increasing PM2. 5in the constitution of air pollutants with a degradation of ambient air quality. Both the average concentration of PM2. 5and the constitution of PM2. 5as the primary pollutant were higher in Zhoucun and Zhangdian districts. Conclusions PM2. 5pollution was more serious in Zibo urban area during heating period,and the focus areas were Zhoucun and Zhangdian district. PM2. 5pollution and its potential health risks should be paid attention by relevant government departments.