【摘要】 以2013年秋季两个航次的葫芦山湾海洋生态环境调查资料为基础,通过水质、沉积物介质(水化要素12种、沉积物要素6种、生态要素4种)的分析数据,运用主成分层次分析法(AHP-PCA)进行初选。经生态环境质量主驱动力分析,确定了生态潜在风险指数权重,底质污染物中的重金属及石油烃要素为生态风险潜评价因子。在此研究的基础上,系统采用Hakanson指数法模型,并结合ArcG IS的空间矢量叠加分析,对筛选出的2类污染物的潜在生态风险进行综合评估,得出了生态风险等级新结论。从环境地球化学保护角度考虑,提出在该海湾长兴岛和西中岛两侧水域,应进一步严格石油、重金属排海的总量控制。更多还原

【Abstract】 Based on the two voyage of marine ecological environment investigation data in Hulushan Bay during the autumn of2013,this paper took advantage of AHP-PCA in order to make a primary selection,which contained the data of water quality,sediment and biological index. By means of eco-environmental quality driving force analyzed,the weight of ecological potential risk index had been confirmed. The pollutants of heavy metals and petroleum hydrocarbon in sediment turned to be the principle potential ecological risk evaluated factors. On this basis,adopting the model of Hakanson index-method systemically and the splendid function of ArcG IS in analysis of spatial vector superposition combining,the paper evaluated this two kind of pollutants in potential ecological risk comprehensively in order to draw the conclusion. In the long term of preventing the ocean from being polluted,this paper threw out a suggestion that enforcing the regulation of the discharge of petroleum and heavy metal turned to be necessary in the bay between Changxing Island and Xizhong Island.更多还原