水力发电学报2016，Vol.35Issue(10)：21-30,10.DOI:10.11660/slfdxb.20161003
渤海湾表层水质时空变化及污染源识别
Spatio-temporal water quality variations and identification of surface water pollutant sources in Bohai Bay
摘要
Abstract
This study examined spatial-temporal variations of water quality and potential pollutant sources in the surface water layer in the offshore areas of Bohai Bay,China,based on 7,488 sets of experimental data collected for 13 water quality indicators at 12 sites three times yearly from 1995 to 2010.A multivariate statistical approach was comprehensively applied,including cluster analysis,discriminant analysis,principal component analysis,and factor analysis.The data series of 16 years were grouped into three clusters:cluster A at early stage of nutrient pollution dominant (1995-2001 with 1998-1999 excluded),cluster B at middle stage of organic contamination dominant (2007-2008),and cluster C at late stage of land-based pollution and human activities dominant (1998-1999,2002-2006 and 2009-2010).In spatial variation,human activities had more serious impact on the nearshore stations;oil and nutrients pollution was more serious in the marine culture areas.This study shows that the comprehensive approach of multivariate statistical methods is effective and useful in water quality investigation of the Bohai Bay offshore areas and our findings would help firther study of water ecological environment in this area.关键词
水环境/渤海湾/聚类分析/判别分析/主成分分析/源解析Key words
water environment/Bohai Bay/cluster analysis/discriminant analysis/principal component analysis/source identification分类
建筑与水利引用本文复制引用
赵海萍,李清雪,陶建华..渤海湾表层水质时空变化及污染源识别[J].水力发电学报,2016,35(10):21-30,10.基金项目
水利部公益项目(201401030) （201401030）
河北省重点基础研究项目(14964206D-8) （14964206D-8）
