【摘要】 为定量分析莱州湾东岸海水养殖产生的营养盐负荷量及对近岸水域水质的影响,以大菱鲆、对虾和海湾扇贝为典型养殖生物,估算其产生的氮磷负荷量,其中大菱鲆和对虾氮磷负荷量采用竹内俊郎法计算,并考虑饵料流失量,海湾扇贝氮磷负荷量根据排泄速率计算,并分析了近岸水域营养盐浓度对海水养殖氮磷负荷量的响应。计算结果表明,海湾扇贝产生的氮磷负荷量最高,对虾产生的负荷量最小;1997~2012年间,莱州湾东岸海水养殖产生的氮磷负荷量呈缓慢增长趋势,其中海湾扇贝养殖产生的氮负荷量与近岸水域的溶解性无机氮浓度呈正相关关系,说明贝类养殖是近岸水域溶解性无机氮(DIN)浓度增加的重要影响因素。研究结果可为莱州湾东岸海水养殖管理提供理论依据。更多还原

【Abstract】 In order to analyze the effect of nutrient loads in mariculture on the coast water quality in the east coast of Laizhou Bay,this study calculated the nitrogen and phosphorus loads from farmed turbot,shrimp and bay scallop.Considering feed lost,Zhuneijunlang method was used to calculate nitrogen and phosphorus load from farmed turbot and shrimp.The nitrogen and phosphorus loads from farmed bay scallop were calculated based on the bay scallop excretion rate.The response of nutrient concentration in coast water to nitrogen and phosphorus loads from mariculture was analyzed.The results show that the largest nitrogen and phosphorus loads are from farmed bay scallop,and the loads from shrimp is the least.From 1997 to 2012year,the nitrogen and phosphorus loads from mariculture increased slowly.The DIN concentrations were positively related to the nitrogen load from bay scallop,which indicates that bay scallop culture was an important factor of coastal water quality.The study can provide theory basis for the coastal management in the east coast of Laizhou Bay.更多还原