海滨城市颗粒污染物浓度变化特征及长期变化趋势研究

Characteristics and Long-term Trends of Concentration Changes of Particulate Pollutants in Coastal Cities

利用历史生态环境监测资料,对海滨城市颗粒污染物浓度变化特征及长期变化趋势进行深度研究。综合考虑研究区域的地理情况,选定监测站获取对应的研究数据,分析该地区四季变化和环境效应,多角度考虑颗粒污染物的浓度影响因素。以近三年的监测数据为例,颗粒污染物浓度呈逐年下降趋势,空间分布会受到环境效应影响,在静稳环境效应下,颗粒污染物浓度会明显升高,尤其是风速较小、雾天或湿度在80%左右的海滨城市区域环境,污染浓度较为显著;而降雨环境和大风环境会裹挟颗粒污染物降到地面,有利于颗粒污染物的扩散,减小污染浓度。

Using historical ecological environment monitoring data,this paper conducts in-depth research on the characteristics and long-term trends of particulate pollutant concentration changes in coastal cities.Taking into account the geographical situation of the study area,a monitoring station was selected to obtain corresponding research data to analyzes the seasonal changes and environmental effects in the area,and consider the concentration influencing factors of particulate pollutants from multiple perspectives.Taking monitoring data from the past three years as an example,the concentration of particulate pollutants shows a decreasing trend year by year,and the spatial distribution is affected by environmental effects.Under the static and stable environmental effects,the concentration of particulate pollutants will significantly increase,especially in coastal urban areas with low wind speeds,foggy days,or humidity of around 80%.The pollution concentration is relatively significant.Rainfall and strong wind environments can carry particulate pollutants to the ground,which is conducive to the diffusion of particulate pollutants and reduces pollution concentration.