海水养殖氮磷污染负荷对莱州湾东岸水质的影响

发布时间：2018-04-13 04:17

本文选题：海水养殖 + 大菱鲆　；参考：《水电能源科学》2017年02期

【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。
[Abstract]:In order to quantitatively analyze the nutrient load produced by mariculture in the east coast of Laizhou Bay and its influence on the water quality in the coastal waters, turbot, prawn and scallop were used as typical culture organisms to estimate the nitrogen and phosphorus load.The nitrogen and phosphorus load of turbot and Penaeus prawn were calculated by the method of Junlang method, and the feed loss was considered. The nitrogen and phosphorus load of scallop was calculated according to the discharge rate, and the response of nutrient concentration in the coastal waters to the nitrogen and phosphorus load of mariculture was analyzed.The results showed that the loading of nitrogen and phosphorus was the highest in the bay scallop and the smallest in the shrimp during the period of 1997 / 2012. The nitrogen and phosphorus load produced by mariculture along the east coast of Laizhou Bay showed a slow increasing trend.There was a positive correlation between nitrogen load and dissolved inorganic nitrogen concentration in coastal waters, indicating that shellfish culture was an important factor influencing the increase of dissolved inorganic nitrogen (DINs) concentration in inshore waters.The results can provide theoretical basis for the management of mariculture on the east coast of Laizhou Bay.
【作者单位】：华北电力大学能源与环境研究中心;清华大学水沙科学与水利水电工程国家重点实验室;华北水利水电大学水利学院;北京师范大学环境学院;
【分类号】：X714;X55

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