湛江港沙湾对虾养殖场虾池水质状况分析

Water Quality in Shrimp Ponds at Shawan Bay in Zhanjiang Port

2002年4～7月,对湛江港沙湾对虾养殖场虾池的水质及对虾的生长情况进行连续监测,应用单项指标评价、富营养化评价等方法,对该养殖场的水质状况进行了评价和营养分级。结果表明,该养殖场的水质呈高N低P状态,水温、DO和大部分池的pH、DRP符合第二类海水水质标准,DIN超标,超标率达70%,该养殖场目前处于P中等限制潜在性富营养水平阶段。

The water quality and growth were determined in shrimp ponds Shawan, Zhanjiang, Guangdong province, from April to July in 2002. The results showed that there were high nitrogen (N) level but low phosphorus (P) level in the shrimp ponds within the standard of the class II seawater in water temperature, dissolved oxygen (DO), pH and dissolved resuspension particulate (DRP). The dissolved inorganic nitrogen (DIN) was above the standard of the class II seawater in 70% of the total shrimp ponds determined, indicating that the water in the shrimp ponds was in a state of potential eutrophication with a medium limiting factor P.