摘要
以桐乡市2014年-2018年空气质量自动监测结果为基础数据,利用主成分分析法和Spearman秩相关系数法,对近5年来桐乡市环境空气中6个主要指标进行评价。主成分分析法结果显示近5年来桐乡市环境空气质量逐年改善,影响空气质量的主要因素为PM2.5,PM10,CO和O3,其中PM2.5的污染最大。Spearman秩相关系数法分析结果显示各指标近五年来均呈下降趋势,其中SO2,PM10下降趋势显著。
The air quality automatic monitoring results of Tongxiang during 2014-2018 were obtained as the basic materials.Six main indexes of air quality in Tongxiang in recent five years were evaluated by principal component analysis method and Spearman rank correlation coefficient method.The results of principal component analysis method showed that the air quality of Tongxiang had been improved year by year in recent five years.The main factors of the atmospheric environmental quality were PM2.5,PM10,CO and O3,and the dominant atmosphere environment pollutant was PM2.5.The results of Spearman rank correlation coefficient method showed that all pollution factors showed a downward trend,and SO2 and PM10 showed a significant downward trend.
作者
祝新明
李莉
吕升
许艳
黄元杰
Zhu Xinming;Li Li;Lv Sheng;Xu Yan;Huang Yuanjie(Jiaxing Eco-Environmental Monitoring Center of Zhejiang Province,Jiaxing 314000,China;Tongxiang Eco-Environmental Monitoring Station of Jiaxing City,Jiaxing 314500,China)
出处
《环境科学与管理》
CAS
2020年第5期179-183,共5页
Environmental Science and Management
关键词
桐乡市
空气质量
主成分分析
秩相关系数
Tongxiang
air quality
principal component analysis
Spearman rank correlation coefficient
