珠三角内湾营养盐分布特征及入海通量研究  

Study on nutrient distribution and fluxes into the sea in the inner bay of the Pearl River Delta

作　　者：杨超琼 方继红 李锟 李珊珊 李彬辉 YANG Chao-qiong;FANG Ji-hong;LI Kun;LI Shan-shan;LI Bin-hui(Shenzhen Ecological Environment Monitoring Station,Shenzhen 518000,China;Lvpeng Environmental Technology(Shenzhen)Co.,Ltd.,Shenzhen 518055,China)

机构地区：[1]深圳市生态环境监测站,广东深圳518000 [2]绿鹏环境科技(深圳)有限公司,广东深圳518055

出　　处：《环境生态学》2024年第11期61-67,82,共8页Environmental Ecology

摘　　要：本研究分析了研究区域营养盐分布特征,并核算了陆源入海氮磷通量及其对珠三角内湾劣四类海水形成的贡献。结果显示,2022年研究区域入海排口总氮含量相对较高,普遍超出2 mg/L,且多富硝态氮和颗粒态磷。2022年入湾总氮和总磷污染负荷分别为6141.37 t/a和378.05 t/a,其中,北侧入湾陆源总氮负荷占入湾陆源污染负荷的比例为60.08%,总磷占45.21%。In this study,the distribution characteristics of nutrients in the study area are analyzed,and the contribution of land-source nitrogen and phosphorus flux to the formation of quaternary seawater in the inner bay of the Pearl River Delta is calculated.The results show that in 2022,the total nitrogen content in the sea outlet in the study area is relatively high,generally exceeding 2 mg/L,and rich in nitrate nitrogen and granular phosphorus.In 2022,the total nitrogen and total phosphorus pollution loads into bay will be 6141.37 t/a and 378.05 t/a,respectively.Among them,the total nitrogen load of the land-based sources entering the bay on the north side accounts for 60.08%of the land-based pollution load,and the total phosphorus accounts for 45.21%.

关 键 词：陆源污染 营养盐分布 氮磷污染物 入海通量 内源沉积物 

分 类 号：X55[环境科学与工程—环境工程] X824