期刊论文

Chang, J.-L.

中文

生态与农村环境学报

1673-4831

2015

31

6

853-858

10.11934/j.issn.1673-4831.2015.06.009

湖南省哲学社会科学基金（12JD11）； 湖南省教育厅项目（12C0567）；

本校为第一且通讯机构

PM_(2.5)空间变异规律是揭示污染机制的重要基础。研究获取珠三角地区共57个监测点2013年全年PM_(2.5)小时均值监测数据,汇总后得到监测点季度均值和年均值,采用空间自相关分析理论研究不同季节PM_(2.5)浓度空间自相关性的强弱与集聚模式。结果显示,珠三角地区PM_(2.5)污染季节差异显著,冬季PM_(2.5)浓度均值是夏季的3倍。空间自相关分析表明,90 km范围内,珠三角PM_(2.5)浓度均存在正空间自相关性且尺度效应明显,空间自相关性存在城市尺度和区域尺度2次递减;春、夏、秋、冬季PM_(2.5)浓度全局Moran's I指数分别为0.542、0.752、0.602和0.628,空间自相关性由高到低依次为夏、冬、秋和春季;珠三角...

PM2.5 has been the primary air pollutant in many cities of China and an expanding public concern as well because of its severe impacts on human health and visibility. The knowledge of spatial variability of PM2.5 is of great importance to revelation of the mechanism of PM2.5 pollution. The monitoring data of hourly mean PM2.5 concentration collected at the 57 monitoring posts in the Pearl River Delta region throughout the year of 2013 were pooled and analyzed and seasonal and annual means at each monitoring post were forked out. The theory of s...