2020年春季和秋季莱州湾近岸海域营养盐空间分布特征研究  

The Spatial Distribution Characteristics of Nutrients in the Coastal Waters of Laizhou Bay in Spring and Autumn 2020

作　　者：董晓晓 李佳蕙 孙珊 田泽丰 史雪洁 由丽萍 DONG Xiaoxiao;LI Jiahui;SUN Shan;TIAN Zefeng;SHI Xuejie;YOU Liping(Shandong Marine Resource and Environment Research Institute,Shandong Key Lab of Marine Ecological Restoration,Yantai 264006,China)

机构地区：[1]山东省海洋资源与环境研究院山东省海洋生态修复重点实验室,烟台264006

出　　处：《海洋开发与管理》2023年第6期85-92,共8页Ocean Development and Management

基　　金：山东省重点研发计划项目(重大科技创新工程)(2020CXGC011404、2019JZZY020705)。

摘　　要：文章基于2020年5月(春季)和10月(秋季)莱州湾近岸海域环境监测数据,研究无机氮(DIN)和活性磷酸盐(DIP)的营养盐空间分布特征,分析海水质量状况和富营养化状况,并完成营养盐与环境因子的相关性分析。研究结果表明:莱州湾海域春季DIN的浓度范围为0.115~1.830 mg/L,呈现近岸高于远岸、西部高于东部的分布特征;秋季DIN的浓度范围为0.009~2.070 mg/L,高值区位于黄河河口附近;春、秋季DIP的浓度范围分别为未检出~0.009 mg/L、0.000 4~0.012 9 mg/L,受我国“控磷”“限磷”等磷负荷消减政策的影响,DIP的浓度一直处于较低水平。受DIN浓度的影响,春、秋季分别有35.7%和30.7%的调查站位超第二类海水水质标准。春季有1.4%的调查站位处于轻度富营养化状态,位于小清河河口附近;秋季有1.6%的调查站位处于轻度富营养化状态,位于黄河河口附近;其他站位均未达到富营养化水平。莱州湾海域营养盐的分布特征与多种环境因子呈现明显的相关性,其空间分布受多因素影响。Based on the environmental monitoring data of Laizhou Bay in May(spring)and October(autumn),2020,this paper had studied the spatial distribution characteristics of inorganic nitrogen(DIN)and reactive phosphate(DIP),the condition of seawater quality and eutrophication in Laizhou Bay,and completed the correlation analysis of nutrient and environmental factors.The results showed that in spring,the concentration of DIN ranged from 0.115 mg/L to 1.830 mg/L,which was higher near shore than far shore and higher in the west than in the east.In autumn,the concentration of DIN ranged from 0.009 mg/L to 2.070 mg/L,and the high value area was located near the estuary of the Yellow River.The DIP concentration in spring and autumn ranged from not detected to 0.009 mg/L and form 0.0004 mg/L to 0.0129 mg/L,respectively.Due to the influence of phosphorus load reduction policies such as“phosphorus control”and“phosphorus limit”,the DIP concentration had always been at a low level.Affected by DIN concentration,35.7%and 30.7%of the survey sites exceeded the second-class seawater quality standard in spring and autumn,respectively.In spring,1.4%of the survey sites were slightly eutrophicated,located near the estuary of Xiaoqing River.In autumn,1.6%of the survey sites were slightly eutrophic,located near the estuary of the Yellow River.And the other sites did not reach eutrophication level.The distribution characteristics of nutrients in Laizhou Bay were significantly correlated with various environmental factors,and the spatial distribution was affected by many factors.

关 键 词：莱州湾 无机氮 活性磷酸盐 空间分布 影响因素 

分 类 号：X820.2[环境科学与工程—环境工程] P76[天文地球—海洋科学] P734