武汉市降尘污染特征及影响因素

以武汉市2006—2013年降尘数据为例,采用SPSS19.0软件统计分析了中部地区内陆城市的降尘污染特征及其影响因素。结果表明,月均降尘污染呈5月峰、11月谷三次曲线型,季节降尘污染呈春季夏季冬(秋)季,年均降尘量呈显著下降趋势。各功能区降尘量差异显著,从多到少顺序依次为工业区交通稠密区居商工混区清洁区。根据主成分分析结果,对于武汉这类经济发展中的中部内陆城市来说,气象因素是影响降尘的重要外在因素。社会因素是主要内在影响因素,其中经济发展因子的影响高于环境建设因子。

Feature and Cause Analysis of Dustfall Pollution of Wuhan

The dustfall content in Wuhan from 2006 to 2013 was statistically analyzed by using SPSS19.0 as a case study to analyze the feature and cause of dustfall pollution in middle inland cities. The result showed that monthly dustfall had the highest content in May and the lowest content in November which can be presented as a cubic curve, seasonal dustfall content appeared as spring > summer > winter(autumn), the average annual dustfall content has significantly fall. There were obvious differences among four functional districts:industrial > heavy traffic > commercial mix residential > clean background. According to the result of principle component analysis, meteorological factors are the important extrinsic factor for the developing middle inland cities such as Wuhan; however social factors are the major intrinsic factor. In addition, economic developing indicators have more impact than environmental constructing indicators.