【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(P<0.01),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.更多还原

【Abstract】 Based on the data obtained in the coastal waters of the Lianyungang coastal area in Jiangsu Province from May 2009 to January 2010, the distribution of temperature, salinity, dissolved oxygen, COD, DIN, DIP and petroleum hydrocarbons were analyzed, and the temporal spatial variations of nutrient level and organic pollution situation were evaluated using methods such as water quality standards index, eutrophication index, nutrient quality index and water organic pollution evaluation index. Combined with historical data, and the trend of major pollution elements in this area and expound the present situation of marine environment were discussed. The environment quality of sea water was better in spring and summer, while the pollution degree increased in autumn and winter in the Lianyungang coastal area. Oils were the main pollution in autumn and winter. Eutrophication and organic pollution were observed in spring and summer based on eutrophication and organic pollution evaluation indexes. And there were some similarities between the eutrophication and organic pollution spatial distribution in spring and summer. The correlation analysis suggested there was a significant positive correlation between chlorophyll a and nutrient, and between chlorophyll a and COD, while negatively correlation between chlorophyll a and dissolved oxygen(P<0.01), implying the robust correlation between the growth of plankton and the content of environmental elements. This study will provide a basic support for the development and utilization of marine resources and environmental protection in Lianyungang coastal area, and a scientific basis for marine management to carry out ecosystem management based on marine resources.更多还原