吉林省2014-2018年城市大气降水变化分析

Characteristics of atmospheric precipitation in Jilin Province from 2014 to 2018

本文基于2014-2018年吉林省大气降水的监测数据,分别从时间和GIS空间分布上对酸雨分布的变化特征进行了研究,采用SPSS统计软件对主要无机离子化学组分进行了相关分析。结果显示,酸雨发生频率逐年降低,酸雨发生区域逐年减少,阴离子中SO42-∕NO3-(当量浓度)比值由2014年的2.24下降到2018年的1.54,从硫酸型污染向复合型转变。

The paper based on the rainfall monitoring data in Jilin Province from 2014 to 2018,we studied the change characteristics of the acid rain distribution from time and GIS space,analysis the main inorganic chemical composition and its correlation with statistical software SPSS.The results expressed that,the frequency of acid rain is reduce,the acid rain area is decrease year by year,the ratio of SO42-∕NO3-(equivalent concentartion)is descent from 2.24 in 2014 to 1.54 in 2018,to transform sulfuric acid pollution into compound pollution.