连云港近海海洋环境营养状态时空变化研究

发布时间：2018-03-02 01:23

本文关键词： 连云港海域海洋环境生态环境调查营养状态环境现状评价　出处：《中国环境科学》2017年10期 　论文类型：期刊论文

【摘要】：依据2009年5月~2010年1月在连云港附近海域进行的4个航次海洋环境综合调查结果,对该海域的海洋环境因子、营养状态水平、有机污染状况的空间分布、季节间变化及相关性进行了研究,结合历史资料探讨了近年间主要污染因子的变化趋势与海洋环境现状.结果表明:该海区春夏季海洋环境质量状况较好,秋冬季的污染程度有所加强,石油类是秋冬季节主要的污染因子.评价显示春、夏季呈现富营养化和有机污染的状态,且二者季节变化和空间分布有一定共性.相关性分析显示叶绿素a与营养盐和化学耗氧量呈现显著正相关,但与溶解氧呈显著负相关(P0.01),表明浮游生物生长与环境要素含量之间的关联性.数据显示日益增强的人类活动对近海海洋环境的显著影响,相关结果可为连云港海域的海洋资源开发利用和环境保护提供基础数据支持,同时为海洋管理部门开展以生态系统为基础的海洋资源管理提供科学依据.
[Abstract]:Based on the results of the comprehensive investigation of the marine environment of four voyages in the sea area near Lianyungang from May 2009 to January 2010, the spatial distribution of marine environmental factors, nutritional status and organic pollution in the sea area was studied. The interseasonal variation and its correlation are studied, and the trend of main pollution factors and the present situation of marine environment in recent years are discussed in combination with historical data. The results show that the quality of marine environment in spring and summer in this area is better than that in spring and summer. The degree of pollution in autumn and winter has been strengthened, and petroleum is the main pollution factor in autumn and winter. The evaluation shows that there are eutrophication and organic pollution in spring and summer. The correlation analysis showed that there was a significant positive correlation between chlorophyll a and nutrients and chemical oxygen consumption. However, there was a significant negative correlation with dissolved oxygen, indicating the correlation between plankton growth and environmental element content. The data showed that the increasing human activity had a significant impact on the offshore marine environment. The relevant results can provide basic data support for the exploitation and utilization of marine resources and environmental protection in Lianyungang sea area, and provide scientific basis for marine resources management based on ecosystem in marine management department.
【作者单位】：中国海洋大学海洋与大气学院;国家海洋局第一海洋研究所;连云港市海洋环境监测预报中心;
【基金】：国家自然科学基金资助项目(41376093) 中央级公益性科研院所基本科研业务费专项资金项目(2017Q10)
【分类号】：X55

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