青岛港董家口港区航道工程临时海洋倾倒区及其周边海域水质评价

Water Quality Assessment of Dongjiakou Port Temporary Ocean Dumping Site and Its surrounding Sea Area

为掌握海洋倾倒区海水水质状况和倾倒活动的影响,为海洋倾倒区的使用和管理提供技术支撑和科学依据,文章针对青岛港董家口港区航道工程临时海洋倾倒区及其周边海域,选取单因子质量指数、多项水质参数综合指数、综合质量指数、富营养指数和有机污染指数,分别对2012-2015年研究区表层和底层海水水质监测数据进行分析和对比。研究结果表明,受倾倒活动的影响,研究区表层和底层海水各项指数及其分布差异很大:单因子质量指数全部达到二类水质标准,2013年变化较大,而后恢复且平稳;多项水质参数综合指数于2014年全面升高,尤其是倾倒区最为明显,2015年倾倒区内出现低值区,但其周边海域仍较高;综合质量指数总体为良好,2014年高值区明显扩大,尤其是倾倒区最为明显,2015年倾倒区有所降低,但其周边海域仍较高;富营养指数于2012年和2014年明显提高,2013年和2015年营养水平较低,均未出现明显的富营养化;有机污染指数显示2012年和2014年开始受到污染,2013年较好,2015年大部分区域开始受到污染,且污染程度较高;海水水质受倾倒活动影响明显,应加强监控和管理。

In order to grasp the sea water quality and the influence of the dumping activities and provide technical support and scientific basis for the use and management of the ocean dumping site,the paper selected the single factor quality index, integrated assessment method of several water quality parameters, trophic status index method and organic pollution index method, and analyzed and compared the monitoring data of surface and bottom water quality in the 2012 2015 in Dongjiakou Port Temporary Ocean Dumping Site and its surrounding area.The results showed that the index and distribution of surface and bottom water in the study area were very different from the effect of dumping activities.The single factor quality index （PQ） has reached two types of water quality standards,which changed greatly in 2013,then recovered and became stable, and the comprehensive index of a number of water quality parameters increased in 2014, especially in the dumping area.There was a low value area in the dumping area in 2015, but the surrounding sea area was still high,the overall quality index was good,and the high value area was obviouslyexpanded in 2014, especially in the dumping area, and the dumping area was lower in surrounding sea area was still higher; the eutrophic index was obviously improved 2014,2013 and 2015.The annual nutrition level was low and no obvious eutrophicatio The organic pollution index showed that it was polluted in 2012 and 2014,and in 201 ter.In 2015 ,most of the regions began to be polluted and the degree of pollution was ter quality of the sea water was affected obviously by the dumping activities,and th and management should be strengthened.