宁德三都湾海水网箱养殖区营养盐状况调查

通过2009年和2010年4—11月对宁德三都湾2个网箱养殖区的无机氮和活性磷酸盐进行监测。结果表明,三都湾网箱养殖区无机氮平均浓度0.324~0.368 mg/L,活性磷酸盐平均浓度0.034~0.035 mg/L。无机氮和活性磷酸盐浓度基本上超出《海水水质标准》GB3097-1997二类标准,超标率在50%~75%。网箱养殖区营养盐浓度有较明显的季节性变化,并且有发生赤潮的潜在性危险。

The nutrient salt condition of Sandu bay sea water cage culture area

Through a sea water monitor investigation to two Sandu bay net-cage cuhure area from April to November during 2009 and 2010,we found that the average content of inorganic nitrogen was 0.324-0.368 rag/L, and average content of labile phosphate was 0.034-0.035 mg/L. The inorganic nitrogen and the active phosphate density is a little higher than the second category for the national sea water standard,which were 50%-75% higher than standard rate. The average nutrients content had an obvious seasonal change in Sandu bay net-cage culture area, which implied a red tide danger.