中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Spatial-temporal characteristics of PM2.5 in China: A city-level perspective analysis

文献类型:SCI/SSCI论文

作者Fang C. L.; Wang, Z. B.; Xu, G.
发表日期2016
关键词PM2.5 China spatial-temporal characteristics monitoring data air-quality pollution regression region land
英文摘要Haze pollution has become a severe environmental problem in the daily life of the people in China. PM2.5 makes a significant contribution to poor air quality. The spatio-temporal features of China's PM2.5 concentrations should be investigated. This paper, based on observed data from 945 newly located monitoring sites in 2014 and industrial working population data obtained from International Standard Industrial Classification (ISIC), reveals the spatio-temporal variations of PM2.5 concentrations in China and the correlations among different industries. We tested the spatial autocorrelation of PM2.5 concentrations in the cities of China with the spatial autocorrelation model. A correlation coefficient to examine the correlativity of PM2.5 concentrations and 23 characteristic variables for 190 cities in China in 2014, from which the most important ones were chosen, and then a regression model was built to further reveal the social and economic factors affecting PM2.5 concentrations. Results: (1) The Hu Huanyong Line and the Yangtze River were the E-W divide and S-N divide between high and low values of China. (2) The PM2.5 concentrations shows great seasonal variation, which is high in autumn and winter but low in spring and summer. The monthly average shows a U-shaped pattern, and daily average presents a periodic and impulse-shaped change. (3) PM2.5 concentrations had a distinct characteristic of spatial agglomeration. The North China Plain was the predominant region of agglomeration, and the southeastern coastal area had stable good air quality.
出处Journal of Geographical Sciences
26
11
1519-1532
语种英语
ISSN号1009-637X
DOI标识10.1007/s11442-016-1341-9
源URL[http://ir.igsnrr.ac.cn/handle/311030/42933]  
专题地理科学与资源研究所_历年回溯文献
推荐引用方式
GB/T 7714
Fang C. L.,Wang, Z. B.,Xu, G.. Spatial-temporal characteristics of PM2.5 in China: A city-level perspective analysis. 2016.

入库方式: OAI收割

来源:地理科学与资源研究所

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