生态与农村环境学报2019，Vol.35Issue(2)：174-179,6.DOI:10.19741/j.issn.1673-4831.2017.0818
京津冀城市群PM2.5的空间分布及相关性分析
Research on the Spatial Distribution and Correlation of PM2.5 in Beijing-Tianjin-Hebei Urban Agglomeration
摘要
Abstract
Based on daily averaged values of PM2.5mass concentration in Beijing-Tianjin-Hebei Urban Agglomeration from2014 to 2016, this study employed Arc GIS 10.2 to analyze the temporal-spatial characteristics of pollution distribution.The spatial correlation of indices such as the percentage of superior, heavily and severely polluted days during typical PM2.5months was also performed.The results show that the profile of the monthly rate of non-polluted days was consistent with the trend of the overall air quality fluctuation during the observation period.The higher proportion of PM2.5-superior period was concentrated from May to September.The heavily and severely polluted days spanned between November and February.From the regional distribution, the proportional spatial pattern of PM2.5heavy and severe pollution decreased from central cities as Shijiazhuang and Baoding to surrounding places.The typical months were selected to carry out spatial correlation of PM2.5.Corresponding results indicate that PM2.5had a positive spatial correlation.The spatial distribution of PM2.5mass concentration showed spatial clustering profile.关键词
PM2.5/时空分布/空间相关性/京津冀城市群Key words
PM2.5/temporal and spatial distribution/spatial correlation/Beijing-Tianjin-Hebei Urban Agglomeration分类
资源环境引用本文复制引用
李雪梅,许东明..京津冀城市群PM2.5的空间分布及相关性分析[J].生态与农村环境学报,2019,35(2):174-179,6.基金项目
国家自然科学基金(71704128) （71704128）
国家社会科学基金(16BGL141) （16BGL141）
天津市艺术科学规划项目(D16007) （D16007）
天津城镇化与新农村建设研究中心开放基金 （）
