为了解锦州港航道工程疏浚物长期倾倒对辽东湾西部海域生态环境产生的影响情况,文章结合2009—2014年倾倒海域的监测资料,通过单因子标准指数法、综合污染指数法以及地质累积指数对比,对倾倒海域的水质、沉积物进行评价;通过香农-韦弗指数方程,对大型底栖生物进行评价.为对比疏浚物倾倒和一般人类活动对海域生态环境的影响程度,在倾倒活动影响范围之外另选取对照站位与其他站位同时展开监测.结果表明,除无机氮外,监测海域水质基本符合《海水水质标准》中的二类标准;沉积物符合《沉积物质量标准》中的一类标准,倾倒海域水质和沉积物未受到污染,并且倾倒活动与人类活动对海域环境产生的影响程度差别不大,但对表层沉积物和大型底栖生物角产生明显影响.%In order to find out the influence of Jinzhou waterway engineering dredged-materials to the west of Liaodong Gulf,this paper combined the monitoring data from 2009 to 2014,with the methods of single factor index,comprehensive pollution index and geological accumulation index to evaluate the seawater and surface sediment quality;analyzed the diversity index by Shannon-Weaver exponential equation to evaluate the phytoplankton.At the same time,points outside the affecting waters were selected to compare with the monitoring data which were in the affecting waters,in order to analyze the contamination degree of marine ecological environment quality be-tween dredged-materials dumping and human activity.The results indicated that excepted inor-ganic nitrogen,the water quality of investigating area reached the second-class water quality from The Chinese National Standard of Seawater Quality;the sediment quality reached the first-class sediment quality from The Chinese National Standard of Sediment Quality,the water and sedi-ment had not been polluted.By contrast,the influence degree between dredged-material dumping and human activity to ecological environmental showed that the effect was similar,however,they had far-reaching influence to sediment quality and large benthic.
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