象山港网箱养殖对海域环境的影响及其养殖环境容量研究

以象山港海域的潮流模型和物质输运模型为基础,建立了各网箱养殖区的氮、磷污染物排放量与研究海域水质之间的响应关系,对该海域的养殖污染状况进行了模拟,讨论了该海域的网箱养殖环境容量.结果表明,象山港内的氮、磷浓度在养殖区密集的港顶海域超出一类水质标准;该海域的氮、磷养殖环境容量分别为670.74t/a和77.32t/a.目前,象山港内各网箱养殖区的污染物排放量已超出其容量,需进行削减.

Environmental impact of cage aquaculture and the aquaculture environmental capacity in Xiangshan Harbor

Based on the tidal model and the mass transport model in Xiangshan Harbor,the corresponding relationship between the pollutant discharge amount and the water quality was built. By using the models, the impact of pollution from cage aquaculture was simulated and the aquaculture environmental capacity was discussed. The simulation results showed that the concentrations of nitrogen and phosphorus have exceeded the water quality standard I at the top of the Harbor where the stocking density is high. The aquaculture environmental capacity of nitrogen and phosphorus in Xiangshan Harbor is 670.74 t/a and 77.32 t/a, respectively. The pollutant discharge amounts from cage aquaculture have exceeded the capacity and need to be cut appropriately.