荆门市城区降尘调查分析及对策

采用网格布点法对荆门市城区降尘进行普查性监测,采用类比法进行数据分析。结果表明,对荆门市降尘平均水平起主要作用的是地表扬尘,它取决于两个相互作用的因素,地表积尘量(与降雨、城区绿化地面硬化水平及城区环境卫生有关);地表扰动(风力、车流量等自然及人为活动因素)。春季,沙尘天气是荆门城区降尘的重要来源。工业污染源对个别区域影响巨大。根据调查分析提出有效防治对策。

Analysis of Dust Precipitation in Urban Area of Jingmen

Dust precipitation in urban area of Jingmen was monitored anddata was analyzed with analogy. Results showed that surface dust contributed the most to average precipitation, with two interactive factors: surface dust accumulation and surface disturbance. Weather of sand and dust in spring was a major cause of dust in urban area, while industrial source had some effect. The efficient control measures were also proposed.