盐城近岸海域水质分布特征及富营养化研究  

Distribution Characteristics of Environmental Factors and Eutrophication Assessment in the Yancheng Coastal Areas

作　　者：许海华[1] 丁言者[1] 李丽花 张煜珩 曹呈娟 陈中伟[1] 杭凌霄 朱旭宇[1] XU Haihua;DING Yanzhe;LI Lihua;ZHANG Yuheng;CAO Chengjuan;CHEN Zhongwei;HANG Lingxiao;ZHU Xuyu(Nantong Marine Environmental Monitoring Center,SOA,Nantong 226002,China;Shanghai Ocean University,Shanghai 201100,China)

机构地区：[1]国家海洋局南通海洋环境监测中心站,南通226002 [2]上海海洋大学,上海201100

出　　处：《海洋开发与管理》2023年第8期97-104,共8页Ocean Development and Management

摘　　要：文章于2018年春、夏、秋季对盐城近岸海域海水营养盐和化学需氧量等环境因子进行调查采样,并分析其时空分布特征;应用有机污染指数法和富营养化指数法2种评价方法,对该海域的海水富营养化水平进行评价。结果显示,研究海域环境因子季节变化显著,有机污染指数和富营养化指数的时空分布特征基本一致,指数由高到低的季节依次为春季、秋季、夏季,空间上呈各河入海口向远岸海域逐渐降低的趋势;聚类分析将江苏近岸海域分为废黄河三角洲区域和辐射沙洲区域2个大类;盐城入海河流输入对污染物的分布有强烈影响,同时水动力情况影响环境因子分布;陆源污染和淡水输入是引起海水环境因子变化的关键因素。Spatial and temporal variations of nutrients and COD in the coastal waters of Yancheng coastal areas were studied based on three seasonal cruises during 2018.Both the organic pollution appraisal index(Q)and the eutrophication index method(E)were used to evaluate the eutrophication of the seawater.The results showed that the spatial-temporal distribution of E and Q were similar in the study area and showed a greater sequence of spring than that of autumn,which is greater than that of summer in the seasonal variation,decreasing gradually away from the shore.The seasonal variation of environmental factors was significant.The clusters analysis showed that the environmental factors could be divided into two groups:the abandoned yellow river and radial sand ridges.The input of rivers entering the sea in Yancheng had a strong influence on the distribution of pollutants,while the hydrodynamic conditions also affected the distribution of environmental factors.The temporal and spatial distribution of the eutrophication index were regulated to a large extent by the runoff.

关 键 词：营养盐 富营养化 海洋环境 

分 类 号：P734[天文地球—海洋化学] P76[天文地球—海洋科学] X55[环境科学与工程—环境工程]