天津近岸海域海水富营养化评价及其主成分分析  

Eutrophication assessment and principal component analysis of the Tianjin coastal waters

作　　者：褚帆 刘宪斌[1] 刘占广[1] 刘新蕾[1] 张文亮 刘畅[3] 

机构地区：[1]天津科技大学天津市海洋资源与化学重点实验室,天津300457 [2]渤海海洋监测监视管理基地筹备处,天津300457 [3]国家海洋信息中心,天津300171

出　　处：《海洋通报》2015年第1期107-112,共6页Marine Science Bulletin

基　　金：海洋公益性行业科研专项(200905007)

摘　　要：于2013年7月对天津近岸海域海水营养盐和叶绿素a等水质因子进行采样调查,运用营养状态质量指数法和富营养化指数法对该海域海水富营养化水平进行评价,采用主成分分析法得出海水富营养化的驱动因子。结果表明,调查海域80.95%站位的无机氮以及61.90%站位的活性磷酸盐为劣四类海水水质;营养状态质量指数法评价与富营养化指数法评价结果基本一致:在北塘入海口周围近岸海域指数最高,其次为子牙新河入海口周围近岸海域,远岸海域的指数较低;影响调查海域海水富营养化的驱动因子为总氮和总磷。Coastal waters near Tianjin area were sampled in July, 2013, and nutrients, chlorophyll a and other components were monitored. Nutrient Quality Index（NQI） and Eutrophication Index Method（EI） were used to evaluate the eutrophication of the seawater. The main factors of seawater eutrophication were got by principal component analysis. The results showed that the inorganic nitrogen of 80.95 % and the active phosphate of 61.90 % sampled from 21 stations were graded as Ⅳ below.The results of NQI and EI were nearly consistent and the indices of coastal waters around the Beitang Estuary were the largest, followed by Ziyaxinhe Estuary and other coastal waters. The driving factors were total nitrogen and total phosphorus,which would impact the eutrophication of the seawater.

关 键 词：近岸海域 海水 评价 富营养化 主成分分析 

分 类 号：Q131[生物学—普通生物学] X55[环境科学与工程—环境工程]