皮尔逊Ⅲ型曲线在滦河水质历时评价中的应用  

Evaluation of Duration of Pollution of Luanhe River Based on Distribution Curve of Pearson Ⅲ

作　　者：乔明叶[1] 周进[2] 任金亮[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003 [2]华北水利水电学院,河南郑州450008

出　　处：《人民黄河》2012年第5期61-62,65,共3页Yellow River

摘　　要：选择滦河滦县断面2006—2008年逐月水质监测资料,采用计算机自动优化适线获得皮尔逊Ⅲ型分布3个统计参数的最佳估计值,对滦河污染历时及变化趋势进行评价,分析了滦河水质动态变化规律。结果表明:滦河滦县断面在评价时段内,水质较好,大部分时间为Ⅲ、Ⅳ类水,劣Ⅴ类水的频率仅为14.08%。Based on the series data in 2006-2008 of water quality in Luanhe River,this paper used computer to automatically obtain the best estimate value of the three statistical parameters of Pearson Ⅲ type distribution.Then used the method of frequency curve to evaluate the duration of pollution of water quality and analyzed the change of water quality.The results show that water quality of Luanxian section of Luanhe River is mainly good in the evaluation period,and most of the test results show grades Ⅲ,grades Ⅳ and the frequency of poor quality water of grade is only 14.08%.

关 键 词：水质评价 频率曲线 污染历时 滦河 

分 类 号：X824[环境科学与工程—环境工程]