2016—2020年云南省主要城市酸雨污染特征及趋势分析  

The Characteristics and Trend of Acid Rain Pollution in the Major Cities in Yunnan Province from 2016 to 2020

作　　者：徐丽霞 向峰 邱飞 彭启洋 万普娟 马强 徐博雯 XU Lixia;XIANG Feng;QIU Fei;PENG Qiyang;WAN Pujuan;MA Qiang;XU Bowen(Yunnan Ecological Environment Monitoring Center,Kunming 650034,China;Yunnan Meteorological Service,Kunming 650000,China;Yunnan Normal University,Kunming 650500,China;Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]云南省生态环境监测中心,云南昆明650034 [2]云南省气象服务中心,云南昆明650034 [3]云南师范大学,云南昆明650500 [4]昆明理工大学,云南昆明650504

出　　处：《灾害学》2022年第1期96-101,共6页Journal of Catastrophology

基　　金：云南省生态环境厅“环境质量变化趋势分析及保障专项资金”;国家自然科学基金(21966016)。

摘　　要：为评价云南省酸雨的污染特征及变化趋势,收集了2016—2020年云南省21个主要城市连续5 a的降水监测数据,利用spearman秩相关系数法分析了云南省“十三五”期间城市酸雨污染的变化趋势,并与“十二五”末期进行对比,结果表明:5 a降水pH平均值均高于5.6,呈逐年上升趋势;酸雨发生频率呈逐年下降趋势;总体上酸雨污染有明显改善。降水组分表明属硫酸硝酸混合型,阳离子、阴离子浓度呈下降趋势。全省降水pH最低值出现在个旧市,属于轻酸雨区;5 a来个旧市酸雨污染状况有明显好转,而紧临个旧市的蒙自市酸雨污染不明显,个旧市是云南省城市酸雨防治的重点。In order to evaluate the characteristics and trend of acid rain pollution in Yunnan Province,precipitation monitoring data of 21 major cities in Yunnan Province for 5 consecutive years from 2016 to 2020 were collected.Spearman rank correlation coefficient method was used to analyze the change trend of urban acid rain pollution during the 13th Five-Year Plan period in Yunnan Province,and compared with the end of the 12th Five-year Plan period.The results showed that:The average pH value of precipitation in 5A was higher than 5.6,showing an increasing trend year by year.The occurrence frequency of acid rain decreased year by year.On the whole,acid rain pollution has been significantly improved.The precipitation components showed that it was a mixed acid rain of sulfuric acid and nitric acid,and the concentrations of cations and anions were decreasing.The lowest pH value of precipitation occurred in Gejiu city,which belongs to light acid rain area.Since 5a,acid rain pollution in Gejiu city has been significantly improved,while that in Mengzi city which is close to Gejiu city is not obvious.Gejiu City is the key city of acid rain prevention and control in Yunnan Province.

关 键 词：城市 酸雨 降水PH值 酸雨频率 秩相关 混合型 云南 

分 类 号：X43[环境科学与工程—灾害防治] X915.5