苏北辐射沙洲北翼海域氮磷污染物镇街行政区环境承载力研究  

Study on the environmental carrying capacity of nitrogen and phosphorus pollutants of the radial sand ridges area on town-jurisdiction scale in northern Jiangsu

作　　者：姜恒 毕文静[1] 罗峰 王成 魏爱泓 李克强[1] JIANG Heng;BI Wenjing;LUO Feng;WANG Cheng;WEI Aihong;LI Keqiang(The Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China;College of Oceanography,Hohai university,Nanjing 210098,China;Jiangsu Environmental Monitoring Center,Nanjing 210036,China)

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东青岛266100 [2]河海大学海洋学院,江苏南京210098 [3]江苏省环境监测中心,江苏南京210036

出　　处：《海洋湖沼通报(中英文)》2025年第1期181-190,共10页Transactions of Oceanology and Limnology

基　　金：江苏省环保科研课题(2019005);江苏省环境监测中心委托项目“江苏近岸海域主要污染物排海总量控制及污染防治对策研究”。

摘　　要：随着苏北沿海高强度人类活动的增加,大量陆源氮、磷污染物排放入海,造成近岸海域污染严重,特别是辐射沙洲北翼近岸海域水体富营养化加重,生态系统健康状况持续下降。本文针对苏北辐射沙洲北翼近岸海域富营养化问题,通过建立三维水动力-水质模型,采用水质模拟-优化方法,在合理划分入海行政管理源区基础上,计算了东台、大丰地区镇(街)行政区氮、磷污染物环境承载力。结果表明,在水质控制标准下,东台、大丰地区DIN环境承载力为2 366 t/a,其中占比最大的是新丰镇,占比最小的是黄沙港镇;PO4-P环境承载力为202 t/a,其中占比最大的是大丰港经济开发区管委会,占比最小的是大中镇,研究结果可为东台、大丰地区镇(街)行政区陆源污染物差别化排海总量控制提供量化依据。With the increase of high-intensity human activities in the coast of northern Jiangsu,a large amount of nitrogen and phosphorus pollutants discharged into the coastal area,which caused the deterioration of water quality.Especially in the radial sand ridges area,the ecosystem health continued to decline,associated with the aggravated water eutrophication.Aimed to the eutrophication problem of the radial sand ridges area in northern Jiangsu,the environmental carrying capacity of nitrogen and phosphorus pollutants on the town-jurisdiction scale in Dongtai and Dafeng counties were calculated.Based on the three-dimensional hydrodynamic water quality model,a water quality-based simulation optimization method was established,with the development of the sea-basin-jurisdiction division.The results showed that the environmental carrying capacity of DIN was 2366 t/a under the national sea water quality criteria in Dongtai and Dafeng counties,with the top proportion in Xinfeng town,and the bottom proportion in Huangshagang town.The environmental carrying capacity of PO4-P was 202 t/a,with the top proportion in Dafeng port economic development zone management committee,and the bottom proportion in Dazhong town.The research results can provide a quantitative basis for the differential total pollution discharge control on the town-jurisdiction scale in Dongtai and Dafeng countries.

关 键 词：环境承载力 三维水质模型 陆源污染物 无机氮 活性磷酸盐 

分 类 号：X824[环境科学与工程—环境工程]