摘要
获取2017年长株潭地区24个监测站点PM2.5数据,采用数理统计和GIS空间分析方法分析其时空分布特征。结果表明:2017年长株潭地区PM2.5污染程度依次为冬季>秋季>春季>夏季;月变化上,1月污染最严重,空气质量占优率不到10%,11、12月次之,8月污染最轻,空气质量占优率达94%,是空气质量最好的月份;日变化上,早上8点左右达到日间浓度峰值,下午16点降至低谷,且夜间浓度明显高于日间浓度;长株潭地区PM2.5污染范围冬季大,夏季小,春秋居中;月度空间变化上,1月污染范围最大,2-4月逐渐缩小,5月略有扩大,6-8月退缩至全年最小,9-12月逐渐扩大。
Temporal variations and spatial distribution of PM2.5concentration in Chang-Zhu-Tan area were analyzed using mathematical statistics and GIS spatial analysis method with data collected from 24 monitoring sites in Chang-Zhu-Tan area.The results show that:In 2017,the level of pollution is winter > autumn > spring > summer in Chang-Zhu-Tan area;As for monthly variation,In January,the pollution was the most serious due to the air quality compliance rate was less than 10%,followed by November and December,the pollution was the lightest in August,and the air quality compliance rate was 94%,This month has the best air quality in a year;For one day,PM2.5 concentration reached at peak around 8:00 am and bottom around 16:00 pm,the nighttime concentration is significantly higher than the daytime concentration;PM2.5 pollution area is largest in winter,smallest in summer,centered in spring and autumn;As for monthly spatial variation,PM2.5 pollution area is largest in January,shrinking in February to April,expanding in May,retreating to the smallest in June to August,expanding from September to December.
作者
黄鹏
余光辉
廖岩
廖亚琴
Huang Peng;Yu Guanghui;Liao Yan;Liao Yaqin(College of Resources,Environment and Safety Engineering,Hu'nan University of Science and Technology,Xiangtan Hu'nan 411201,China;South China Institute of Environmental Science MEP.Guangzhou Guangdong 510655,China)
出处
《环境与发展》
2019年第1期167-170,共4页
Environment & Development
基金
国家社科基金项目(No.15BSH038)
关键词
PM2.5
时空分布
长株潭地区
PM2.5
Spatial-Temporal distribution
Chang-Zhu-Tan area
