2010—2019年衡阳市大气降尘污染特征及变化趋势分析

利用2010—2019年衡阳市城区大气降尘监测数据,研究分析降尘时间、空间污染特征,并采用秩相关系数法定量分析污染变化趋势.结果表明:大多数年份衡阳市城区大气降尘污染程度较轻,上半年降尘量低于下半年,交通区降尘量对市城区总体的影响最大;秩相关系数法定量分析得出居民区降尘污染呈加重趋势、且污染变化趋势具有显著意义,商业区...

Analysis on the Characteristics and Trend of Airborne Pollution in Hengyang from 2010 to 2019

Based on the monitoring data of atmospheric dust fall in Hengyang City from 2010 to 2019,the temporal and spatial pollution characteristics of dust fall were studied and analyzed,and the trend of pollution change was quantitatively analyzed by rank correlation coefficient method.The results show that in most years,the degree of air dust pollution in Hengyang City is relatively light,the dust fall in the first half of the year is lower than that in the second half of the year,and the dust fall in the traffic area has the greatest impact on the overall urban area of Hengyang City;the quantitative analysis of rank correlation coefficient shows that the dust pollution in residential areas is increasing,and the trend of pollution change is significant.The trend of dust pollution change in commercial areas,industrial areas,traffic areas and the whole city is not significant,and the trend is not obvious.