【摘要】 根据2018年春季和夏季对秦皇岛近岸海域水质调查结果，依据海水水质标准、采用有机污染评价指数和营养指数评价方法，对调查水域的水质质量状况进行评价。结果表明：春季和夏季DIN和DIP浓度的变化范围分别为0.006～1.094 mg/L和0.001～0.018 mg/L,均值分别为0.140 mg/L和0.004 mg/L;COD的变化范围为0.68～2.50 mg/L,平均值为1.25 mg/L。在春夏两个航次的调查中，所有调查因子的均值均符合I类海水水质标准。有机污染指数的范围为-0.67～5.33,均值为0.52,表明有机污染程度处于良好状态；富营养化指数的范围为0.00～3.75,均值为0.18,调查水域基本处于贫营养状态。更多还原

【Abstract】 The spatial and temporal variations of nutrients in the coastal waters of Qin Huangdao were studied based on two seasonal cruises during 2018.Pollution status was evaluated according to Seawater quality standard.The organic pollution appraisal index(A) and the eutrophication index method(E) were used to evaluate the eutrophication of the seawater.Results showed that the variation ranges of DIN and DIP concentrations in spring and summer were 0.006～1.094 mg/L and 0.001～0.018 mg/L respectively, with the average of 0.140 mg/L and 0.004 mg/L respectively. The variation range of COD was 0.68～2.50 mg/L, and the average value was 1.25 mg/L.In the investigation of spring and summer voyages, the mean values of all investigation factors met the first standard request of the seawater quality criterion.The range of organic pollution index was-0.67～5.33, the average value was 0.52, which indicated that the organic pollution status of the surface seawater in the area was good.The range of eutrophication index was 0.00～3.75, with an average of 0.18.The investigated waters was basically in oligotrophic state.更多还原