雾霾的影响因子分析及其区域相关性研究

Impact Factor Analysis of Haze and Their Regional Correlation at Cheng-Yu Region

成都、重庆作为中国西南地区快速发展的城市,是雾霾频发的区域,研究其雾霾因子联系以及区域空间分布特征及其规律,对于城市发展、创建绿色城市具有重要意义。通过分析2016年12月~2017年2月的PM2.5等污染物浓度数据可知:①成渝地区雾霾产生的高峰期在1月,并以成都、重庆为中心向四周减弱;②在时间分布上,成都和重庆的雾霾污染物浓度呈协同变化趋势,说明两地雾霾在区域上相互影响,协同作用;③在气象因素中,两地的湿度和风速对雾霾集聚、转移和扩散具有重要作用;④两地的位置和地形特征是其雾霾具有相关性的重要因素,因此只有两地同时防治雾霾,才能达到最好的效果。根据不同地域特征,积极改进生产结构,采取相应措施,才是治理雾霾的根本所在。

As the rapidly development city in southwest China, Chengdu and Chongqing are also the regions with frequent haze. It is significant for urban development and green city establishment to study haze factors in the region of contact, the study area spatial distribution characteristics and laws. In this paper, we analyzed the concentration of pollutants(such as PM2.5) from December 2016 to February 2017. The results show that(1)the peak period of haze in Cheng-Yu Region occurs in January. For the spatial distribution, Chengdu and Chongqing are the concentration centers of haze, and the concentration abate from these two cities to their periphery.(2)The concentration of haze in Chengdu and Chongqing show a coordinate trend in the temporal distribution, and it shows the haze in the two cities influences each other which called synergistically.(3)For the meteorological elements of two cities, humidity and wind speed play the important roles in the aggregation, transfer and diffusion of haze.(4)The location and terrain features of the two cities are important factors for the correlation of haze. The prevention and control of haze should be taken in two places at the same time. Only in this way it will do the best effect. According to the different geographical features, we should actively improve production structure and adopt corresponding measures, which is the essential governance of haze.