2013年春夏季莱州湾海水环境要素特征和富营养化评估  

Characteristics of Environment Parameters and Eutrophication Assessment of Seawater in Laizhou Bay in Spring and Summer,2013

作　　者：徐艳东[1,2] 魏潇 李佳蕙 吴兴伟 马元庆 孙伟 

机构地区：[1]山东省海洋资源与环境研究院,山东省海洋生态修复重点实验室,山东烟台264006 [2]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《中国环境监测》2016年第6期63-69,共7页Environmental Monitoring in China

基　　金：国家海洋公益性行业专项经费项目(201105006,201205001);山东省科技发展计划(2014GSF117030)

摘　　要：根据2013年5(春季)、8月(夏季)莱州湾海水环境要素的调查资料,采用富营养化指数、潜在性富营养化评价模式和灰色聚类分析方法研究环境要素特征和评估海水富营养化状况。结果表明,无机氮是莱州湾水质的主要污染要素,春夏季的N/P平均值分别为100.76、117.84,潜在性富营养化评价模式结果表明,春夏季各站位的营养级均只包括Ⅳ_P、Ⅵ_P两类,磷限制为莱州湾的营养盐结构特征;富营养化指数评价结果表明,春季和夏季E>1站位比例分别为65%、20%;灰色聚类分析结果表明,春季Ⅱ级、Ⅲ级的站位比例分别为95%、5%,夏季Ⅱ、Ⅲ级的站位比例分别为70%、25%,Ⅱ级中的部分站位具有较大潜在富营养化风险。Based on field data of environmental parameters of seawater in Laizhou Bay in May（ on behalf of spring） and August（ on behalf of summer） of 2013,their characteristics were investigated and eutrophication degree of seawater was successively assessed by eutrophication index,potential eutrophication assessment model（ PEAM） and grey clustering analysis（ GCA）. The results revealed that dissolved inorganic nitrogen（ DIN） is the principal contamination parameter for water quality of Laizhou Bay. Mean values of N∶ P ratio in spring and summer are 100. 76 and 117. 84,respectively. By means of potential eutrophication assessment model,we found that there are merely two levels of eutrophication,ⅣPand ⅥP,to which all the sampling sites in spring and summer have attained. Thus,the structure of nutrients is characterized by phosphorus-limitation in Laizhou Bay. As for the eutrophication index,E values exceed 1,the guideline,for 65% of all the sampling sites in spring and for 20% of them in summer. The results of grey clustering analysis showed that the proportions of mid-eutrophic（ Ⅱ） and eutrophic（ Ⅲ） stations are 95% and 5% respectively in spring while are 70% and 25% respectively in summer,and some mid-eutrophic（ Ⅱ） ones have comparatively high potential risk of eutrophication.

关 键 词：富营养化 环境要素 灰色聚类分析 氮磷比 莱州湾 

分 类 号：X824[环境科学与工程—环境工程]