南京市近十年降尘趋势分析

基于南京市积累的近十年降尘监测数据,按年度、季度和月度分析降尘的时间趋势变化,结果为全市降尘总体呈显著下降趋势,城区降尘污染明显高于郊区县;全市降尘量季度分布是春季〉夏季〉秋季〉冬季,且存在显著性差异;在春季的4月降尘量达到最高。按行政区、功能区分析降尘的空间分布变化,结果为各降尘功能区以交通区污染最重,道路尘、建筑尘和机动车尾气尘是城市环境管理的重点。

Trend Analysis of Nanjing Dust for Nearly a Decade

Based on Nanjing-accumulation of dust monitoring data from the past 10 years,analysis of annual,quarterly and monthly time trend of changes in dust.The results for the city's dust was a significant downward trend in general,urban dust pollution,much higher than suburban counties.The city is the distribution of dust in the spring quarter,the amount of summer autumn in winter,and there was a significant difference,In the spring of April reached the highest dust.According to administrative,functional area anal...