摘要
根据2011~2018年河北省海洋生态环境监测数据,研究沧州黄骅港海域水质要素变化特征及其海水自净能力,运用单因子标准指数法、营养指数法、有机污染评价指数法及PSR框架富营养化综合评价法评价海域营养状态。研究发现,海域水体中DIN浓度总体呈现逐渐降低的特征;活性磷酸盐浓度大体呈现先升高后降低的特征,且已成为浮游植物生长的限制因素。结果表明,黄骅港海域具有较强的海水自净能力。四种评价模式均表明海域富营养化水平表现出先由中营养状态发展为富营养状态,后又恢复为中营养状态的趋势。
According to the monitoring data of marine ecological environment in Hebei Province from 2011 to 2018,the change characteristics of water quality elements and self purification capacity of the sea-area of Huanghua port in Cangzhou were studied,and the nutritional status of the sea-area was evaluated by single factor standard index method,nutritional index method,organic pollution evaluation index method and PSR framework eutrophication comprehensive evaluation method.It is found that the concentration of DIN in sea water decreased gradually,and the concentration of active phosphate increased first and then decreased,which had becomed the limiting factor of phytoplankton growth.The results showed that Huanghua port had a strong self purification ability.And the four evaluation models showed that the eutrophication level of the seaarea showed the trend of developed from the medium nutrition state to the eutrophication state,and then returned to the medium nutrition state.
作者
刘龙
褚芹芹
王全颖
谢润超
杜雨蒙
张建乐
Liu Long;Chu Qinqin;Wang Quanying;Xie Runchao;Du Yumeng;Zhang Jianle(Qinhuangdao Marine Environmental Monitoring Central Station,Qinhuangdao Hebei 066002,China)
出处
《环境与发展》
2020年第7期122-125,127,共5页
Environment & Development
关键词
黄骅港
水质特征
自净能力
富营养化
Huanghua port
Water quality characteristics
Self purification capacity
Eutrophication
