辽东湾北部河流氮磷入海通量及污染源解析  

River nitrogen and phosphorus influxes and pollution sources in the northern Liaodong Bay

作　　者：张媛媛 刘建卫 田晶 陈小强 ZHANG Yuanyuan;LIU Jianwei;TIAN Jing;CHEN Xiaoqiang(Institute of Water Environment,School of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学建设工程学部水环境研究所,辽宁大连116024

出　　处：《水资源与水工程学报》2024年第4期29-37,46,共10页Journal of Water Resources and Water Engineering

基　　金：国家重点研发计划项目(2019YFC1407700、2016YFC0400903);国家自然科学基金项目(51679026)。

摘　　要：为量化陆源氮磷污染对辽东湾北部海洋环境的影响,以辽东湾北部的浑河和太子河流域(浑太流域)为研究对象,通过构建SWAT模型,对2015—2018年陆源氮磷污染负荷的产生量以及入海通量进行模拟,分析其年际和年内变化特征,并探究氮磷污染的来源、贡献率及驱动因素。结果表明:陆源氮磷污染产生量及入海通量整体呈减少趋势(2016年除外),太子河氮磷通量约为浑河的2.4倍;受降水驱动影响,丰水期总磷及氨氮的入海通量占比均超过55%。总磷及氨氮在入海污染中贡献率较高,其入海通量与污染物浓度的相关性远低于入海流量。因此,从源头上加强浑太流域污染治理,减少氮磷的汇入,是解决辽东湾北部海洋污染问题的关键。To quantify the impact of terrestrial nitrogen and phosphorus pollution on the marine environment in the northern Liaodong Bay,the Hun River and Taizi River Basin(Hun-Tai River Basin)in the northern Liaodong Bay were taken as the research objects.A SWAT model was constructed to simulate the generation and influx of terrestrial nitrogen and phosphorus pollution loads from 2015 to 2018.And then the inter-annual and intra-annual variation characteristics of the pollution loads were analyzed to investigate the sources,contribution rates and driving factors of the nitrogen and phosphorus pollution.The results indicated that the overall generation and influx of terrestrial nitrogen and phosphorus pollution exhibited a decreasing trend year by year(excluding 2016),and the nitrogen and phosphorus influx of the Taizi River was approximately 2.4 times of that of the Hun River.Driven by precipitation,the proportion of total phosphorus and ammonia nitrogen influx during the wet season exceeded 55%.Total phosphorus and ammonia nitrogen contributed significantly to the influx pollution,and the correlation between the influx and pollutant concentration was much lower than that between the influx and inflow volume.Therefore,strengthening pollution control in the Hun-Tai River Basin and reducing the influx of nitrogen and phosphorus from the source is the key to addressing marine pollution issues in the northern Liaodong Bay.

关 键 词：氮磷入海通量 污染源解析 SWAT模型 浑太流域 辽东湾 

分 类 号：X522[环境科学与工程—环境工程] TV214[水利工程—水文学及水资源]