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2013-2019年乌梁素海排干入湖污染负荷与湖区水质的响应关系 被引量:10

Study on the Response Relationship between the Pollution Load of Arterial Drainage of Lake Wuliangsuhai and the Water Quality of the Lake from 2013 to 2019
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摘要 基于2013-2019年乌梁素海入湖排干与湖区水质数据,分析入湖和湖区水质的主要影响因子,并通过相关性分析探究湖区入湖污染负荷与水质的响应关系。结果表明:乌梁素海截污减排已见成效,各入湖口主要污染物指标均可达到V类水质标准;湖体氨氮(NH_3-N)、总氮(TN)、总磷(TP)和化学需氧量(COD)的质量浓度呈明显下降趋势,年均下降率分别为12.7%、8.9%、10.9%和2.5%。相关性分析表明,乌梁素海入湖污染负荷与湖区氨氮(NH_3-N)、总氮(TN)、总磷(TP)和化学需氧量(COD)的质量浓度呈显著、极显著正相关关系。乌梁素海排干入湖污染负荷是影响湖区氨氮(TN)、总氮(NH_(3)-N)、总磷(TP)和化学需氧量(COD)质量浓度的主要因素。外源污染的削减是入湖污染物负荷降低的主要原因,因此削减排干入湖污染负荷对控制乌梁素海湖体污染因子具有重要意义。 Based on the data of arterial drainage and water quality in Lake Wuliangsuhai area from 2013 to 2019,this paper analyzes the main influencing factors of inflow and the main part of the lake area.Through correlation analysis,the response relationship between pollution load and water quality is explored.The results are as follows.Firstly,the positive effect of pollutant interception and emission reduction of the Lake had been witnessed,and the main pollutant indexes of each inlet can meet the level of class V standard.Secondly,the mass concentrations of ammonia nitrogen(NH 3-N),total nitrogen(TN),total phosphorus(TP)and chemical oxygen demand(COD)in the lake show a significant downward trend,with an average annual decline rate of 12.7%,8.9%,10.9%and 2.5%,respectively.Correlation analysis shows that the pollution load of Lake Wuliangsuhai into the lake is significantly and significantly positively correlated with the mass concentration of ammonia nitrogen(NH 3-N),total nitrogen(TN),total phosphorus(TP)and chemical oxygen demand(COD)in the lake area.The pollution load of the arterial drainage of Lake Wuliangsuhai drained into the lake is the main factor affecting the mass concentration of ammonia nitrogen(NH 3-N),total nitrogen(TN),total phosphorus(TP)and chemical oxygen demand(COD)in the lake area.The reduction of external pollution is the main reason for the reduction of pollutant load into the lake.Therefore,reducing the pollution load of arterial drainage into the lake is of great significance to the control of pollution factors in Lake Wuliangsuhai.
作者 杨文焕 尹强 钟清涛 王志超 李卫平 YANG Wenhuan;YIN Qiang;ZHONG Qingtao;WANG Zhichao;LI Weiping(School of Energy and Environment,Inner Mongolia University of Science and Technology,Baotou 014010,China)
出处 《华北水利水电大学学报(自然科学版)》 北大核心 2021年第1期7-15,30,共10页 Journal of North China University of Water Resources and Electric Power:Natural Science Edition
基金 国家重点研发计划项目(2019YFC0409204) 内蒙古自治区科技计划项目(2020GG0208)。
关键词 乌梁素海 污染负荷 污染因子 相关性分析 Lake Wuliangsuhai pollution load pollution factors correlation analysis
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