入海河流总氮时间变化特征及其对降雨的响应：以掘苴河为例
Temporal Variation Characteristics of Total Nitrogen in Rivers Entering the Sea and Its Response to Rainfall: A Case Study of Jueju River
DOI: 10.12677/wpt.2026.143019, PDF,   
作者: 马攀述, 李银平*：青岛科技大学生物工程学院，山东 青岛
关键词: 入海河流；总氮；时间变化特征；降雨；Rivers Entering the Sea； Total Nitrogen； Time Variation Characteristics； Rainfall
摘要: 本文基于以2020~2024年长江入海河流掘苴河的环东闸口监测断面数据为基础，结合当地气象站的降雨数据，分析掘苴河流域总氮的时间变化特征及其对降雨的响应。结果表明：① 掘苴河流域总氮污染问题较为严峻，总氮年均值介于2.42~3.12 mg/L之间，超过地表水环境总氮质量标准V类限值2 mg/L。总氮呈现明显的季节性变化规律，夏冬季节浓度高，春秋季节浓度较低。② 在降雨强度方面，随着降雨强度的增加，总氮浓度呈现先降低后升高最后又降低的变化趋势，降雨产生的侵蚀、渗透和稀释作用共同影响水体的氮素浓度。③ 在降雨的季节性变化方面，总氮浓度在丰水期和枯水期的浓度值较高，平水期浓度值较低，受到农业面源和污水处理厂出水的影响。
Abstract: Based on the monitoring cross-section data of the east gate of the Yangtze River entering the sea from 2020 to 2024, combined with the rainfall data of the local weather station, this paper analyzes the temporal variation characteristics of total nitrogen and its response to rainfall in the Jueju River Basin. The results showed that: ① The total nitrogen pollution in the Jueju River Basin was serious, and the annual average of total nitrogen was between 2.42 and 3.12 mg/L, which exceeded the class V limit of the surface water environment total nitrogen quality standard by 2 mg/L. The concentration of total nitrogen was high in summer and winter, and low in spring and autumn. ② In terms of rainfall intensity, with the increase of rainfall intensity, the total nitrogen concentration first decreased, then increased, and finally decreased. The erosion, infiltration and dilution caused by rainfall jointly affect the nitrogen concentration in water. ③ In terms of seasonal variation of rainfall, the concentration of total nitrogen is higher in wet season and dry season, and lower in normal season, which is affected by agricultural non-point sources and sewage treatment plant effluent.
文章引用：马攀述, 李银平. 入海河流总氮时间变化特征及其对降雨的响应：以掘苴河为例[J]. 水污染及处理, 2026, 14(3): 179-190. https://doi.org/10.12677/wpt.2026.143019

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