摘要
大气降尘是城市大气环境监测的重要内容之一,其值可作为空气质量的指标。目前,对降尘数据的有效分析和利用尚处于研究阶段,国家也无明确、统一的评价标准,这为研究和评价城市大气污染状况,制定改善城市生活环境的具体措施带来了一定的困难。本文根据徐州市多年监测的降尘数据,对徐州市市区及近郊的降尘量进行了分析统计,找出了徐州市近11年来降尘的总体变化规律;利用方差分析检验了不同季节降尘的显著性差异,发现春季降尘量最大;找出了不同功能区的降尘变化规律,发现工业区的降尘量最大。最后根据秩相关系数对其进行了趋势分析,结果表明,徐州市的降尘呈下降趋势。
Atmos dusffaU is one of important contents of environmental monitoring on atmosphere, the values may be used as targets of air quality. At present, efftcctive analysis and imposion on datas of atmos dusffall is still in investigation, and there is no specific and uniform assessment standard, which leads to difficult not only on investigating and assessing the pollution of atmosphere of city but also on establishing idiographic measures to improve city habitation. Based on the data gained from many years monitoring, the amount of dusffall in urban and near rural of Xuzhou is statistically analyzed in this paper and the changing law of the dusffall during the recent eleven years is given. Analysis of variance is used to find the significance among the different seasons and we find the amont of dusffall in spring gets maximum value. The changing law of the dusffall according to the different function areas is also found and the analysis shows the amount of dusffall in industral areas is most coefficient method. It is shown in the amount of dusffall trends downards in Xuzhou.
出处
《环境科学与管理》
CAS
2008年第6期40-42,46,共4页
Environmental Science and Management
关键词
大气降尘
变化规律
变化趋势
atmos dusffall
changing law
changing trend
