磁湖总氮总磷变化趋势和突变分析  

Variation Trend and Mutation Analysis of Total Nitrogen and Phosphorus in Cihu Lake

作　　者：黄娟 Huang Juan(Huangshi Ecological Environment Monitoring Center,Huangshi,Hubei 435000,China)

机构地区：[1]黄石生态环境监测中心,湖北黄石435000

出　　处：《绿色科技》2020年第14期124-128,共5页Journal of Green Science and Technology

摘　　要：采用Daneil趋势检验法和mann-kendall突变检验法对磁湖2007~2019年总氮、总磷变化趋势和突变开始时间进行了分析,结果表明:磁湖各点位总氮、总磷时间序列浓度变化整体呈下降趋势,总氮突变开始时间集中在2012~2014年左右;总磷突变开始时间集中在2009~2011年左右。In this paper,Daneil trend test and Mann Kendall mutation test were used to analyze the change trend and mutation time of total nitrogen and total phosphorus in Cihu Lake from 2007 to 2019.The results showed that the concentration of total nitrogen and total phosphorus in Cihu Lake showed a downward trend;the mutationtime of total nitrogen was concentrated from 2012 to 2014,and the mutation time of total phosphorus was concentrated from 2009 to 2011.

关 键 词：变化趋势 Spearman秩相关系数 mann-kendall突变检验 

分 类 号：X524[环境科学与工程—环境工程]