上海市奉贤区金汇港总氮污染问题分析

Analysis of Total Nitrogen Pollution in Jinhui Port, Fengxian District, Shanghai

摘要: 近年来，入海河流总氮管控已成为改善近岸海域水质的关键措施。本文聚焦奉贤区金汇港水体，从年际趋势、年内波动特征、沿程分布规律等方面分析总氮变化情况，探索影响该入海河流总氮浓度波动的成因，认为当前引起总氮浓度反弹的主要因素为农业面源排放的持续性输入、城镇生活污染削减控制不足等。

Abstract: In recent years, the control of total nitrogen in rivers flowing into the sea has become a key measure to improve the water quality of coastal waters. This paper focuses on the water body of Jinhui Port in Fengxian District, analyzing the changes in total nitrogen from aspects such as interannual trends, intra-annual fluctuation characteristics, and along-course distribution patterns. It explores the causes of the fluctuation in total nitrogen concentration in this river flowing into the sea and concludes that the main factors currently causing the rebound in total nitrogen concentration are the continuous input of agricultural non-point source emissions and insufficient reduction and control of urban domestic pollution.