CAJ | 학술논문

根据2006～2011年沈家门渔港海域水质监测结果,对氮磷营养盐的污染现状、年际变化进行了分析,并进行营养状态指数法和潜在性富营养化程度评价。结果表明：沈家门渔港海域无机氮和磷酸盐含量均呈逐年上升趋势,尤其是无机氮含量较高,为0.453～0.732 mg/dm3,已超国家第四类海水水质标准。营养指数E为3.73～13.10,水体处于富营养化状态且呈逐年加重趋势,其中,2008年和2010年属于富营养等级,其它年份均为磷中等限制潜在性营养等级（VP）;N/P值为25.9～38.4,高于正常海水的Redfield比值,磷酸盐成为浮游植物生长繁殖的主要限制因子。
근거2006～2011년침가문어항해역수질감측결과,대담린영양염적오염현상、년제변화진행료분석,병진행영양상태지수법화잠재성부영양화정도평개。결과표명：침가문어항해역무궤담화린산염함량균정축년상승추세,우기시무궤담함량교고,위0.453～0.732 mg/dm3,이초국가제사류해수수질표준。영양지수E위3.73～13.10,수체처우부영양화상태차정축년가중추세,기중,2008년화2010년속우부영양등급,기타년빈균위린중등한제잠재성영양등급（VP）;N/P치위25.9～38.4,고우정상해수적Redfield비치,린산염성위부유식물생장번식적주요한제인자。
The nutrient status and change were evaluated in Shenjiamen Fishing Port,according to the investigation result from 2006 to 2011.The result showed that the concentration of inorganic nitrogen and phosphate raised year after year,especially the concentration of inorganic nitrogen was high,exceeded the fourth grade of sea water quality standard.The nutrition index(E) was 3.73~13.10,the sea area had been in eutrophication state and decreased gradually.The ratio of N/P in the water was 25.9~38.4,which was much higher than that of Redfield ratios,and the inorganic phosphate was to be limiting factor.