珍珠湾养殖区水质富营养化评价与主要污染物的探究

Evaluation of eutrophication of water quality in Pearl Bay Culture area and exploration of main pollutants

文章根据2012~2016年珍珠湾养殖区海域表层海水的调查结果,评价该海域水质富营养化的变化趋势,并根据单因子指数法和超标率等评价指标,初步探究调查海域的主要污染物。结果显示:调查期间,COD和DIP整体上比较稳定,DIN和石油类波动范围较大;历年E平均值总体表现为递增趋势,但在2016年明显回落;总体来说,调查海域主要污染物为石油类和DIN,各评价要素污染指数变化总体来说较为平稳,DIN在2015年出现大幅度增长现象。

Based on the 2012~2016 surface Pearl Bay mariculture area waters of the survey results,the change tendency of sea water eutrophication,and according to the evaluation of single factor index method and exceed the standard rate of major pollutants preliminary inquiry investigation area.The results showed that during the investigation,COD and DIP as a whole is relatively stable,DIN and oil in a larger range over the years;the average value of E generally shows increasing trend,but dropped significantly in 2016;in general,the main pollutant investigation area for oil and DIN,the elements of pollution index changes overall is relatively stable,DIN growth in 2015.