| 引用本文： |
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滕姣,郭志阳,陈盛,谭茜.淮水北调工程输水干流水质的时空变化[J].广西科学,2025,32(1):182-191. [点击复制]
- TENG Jiao,GUO Zhiyang,CHEN Sheng,TAN Qian.Spatial and Temporal Variations of Water Quality in the Trunk Stream of the Huaihe Water Transfer North Project[J].Guangxi Sciences,2025,32(1):182-191. [点击复制]
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| 摘要: |
| 为了解淮水北调工程水源及调水干流水质变化，基于2011-2019年淮水北调工程沿线4个监测断面的逐月监测数据，采用单因子污染指数法、水质综合污染指数(WQI)法、主成分分析法、Daniel趋势检验法及Ward聚类分析法分析各断面水质时空变化特征。结果表明：①蚌埠闸中监测断面连续9年的5项监测指标均能达到地表水Ⅲ类标准，何巷闸下监测断面化学需氧量(CODCr)在2011年、2012年、2016年及2019年超地表水Ⅲ类标准；整体来看，宿州闸上、四铺闸上监测断面近九年的CODCr、高锰酸钾指数(CODMn)、氨氮(NH3-N)及总磷(TP)随时间呈下降趋势，溶解氧(DO)随时间呈升高趋势；汛期DO、NH3-N下降，其余指标在汛期均升高；②4个监测断面的WQI整体平均值为59.40，表明水质属于“良”等级；WQI值以2014年为拐点先降后增；汛期WQI值变小，水质变差；主成分分析及Spearman相关性分析结果表明CODCr、CODMn、TP是影响水质的关键污染指标；③Daniel趋势检验表明，监测断面WQI值均呈上升趋势，表明9年来监测断面水质有变好的趋势。监测断面空间上表现为水质从南到北逐渐变差，而水质污染以入河支流沟渠输入和人类活动带来的污染为主。因此，应进一步加强污染防治工作，确保淮水北调工程输水水质安全。 |
| 关键词: 淮水北调工程 水质评价 水质综合污染指数法 主成分分析 Daneil趋势检验法 |
| DOI：10.13656/j.cnki.gxkx.20250521.019 |
| 投稿时间：2024-03-26修订日期：2024-04-25 |
| 基金项目:国家水体污染控制与治理科技重大专项(2017X07603-005)，引江济淮工程(安徽段)输水沿线水源保护区划分、重大突发性水污染事件预警系统和水源地保护规划等课题研究项目(YJJH-ZT-ZX-20230706545)资助. |
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| Spatial and Temporal Variations of Water Quality in the Trunk Stream of the Huaihe Water Transfer North Project |
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TENG Jiao1, GUO Zhiyang1, CHEN Sheng2, TAN Qian1
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| (1.Anhui Survey and Design Institute of Water Resource and Hydropower Co., LTD., Hefei, Anhui, 230088, China;2.Anhui Provincial Group Limited for Yangtze-to-huaihe Water Diversion, Hefei, Anhui, 230088, China) |
| Abstract: |
| The aim of this study is to understand the water sources of the Huaihe Water Transfer North Project and the water quality changes in the trunk stream of the water diversion.Based on monthly monitoring data from 2011 to 2019 for the four monitoring sections of the Huaihe Water Transfer North Project,spatial and temporal variation characteristics of water quality at each section were analyzed based on the single-factor pollution index,Water Quality Index (WQI),principal component analysis,Daniel's trend test and Ward cluster analysis.The results were yielded as follows:①The five monitoring indicators in the monitoring section of Bengbu sluice in the nine consecutive years reached the surface water class Ⅲ standard,and the Chemical Oxygen Demand (CODCr) in the monitoring section of Hexiang sluice exceeded the surface water class Ⅲ standard in 2011,2012,2016,and 2019.On the whole,the monitoring sections of Suzhou sluice and Sipu sluice in the nine years showed a decreasing trend in CODCr,potassium permanganate index (CODMn),ammonia nitrogen (NH3-N) and Total Phosphorus (TP),and an increasing trend in Dissolved Oxygen (DO) over time.DO and NH3-N decreased during the flood season,and the rest indicators increased during the flood season.②The overall average value of WQI of the four monitoring sections was 59.40,indicating that the water quality is good.The WQI value first decreased and then increased with 2014 as the inflection point.During the flood season,the WQI value became smaller and the water quality became poorer.The principal component analysis and Spearman correlation analysis showed that CODCr,CODMn,and TP were the key pollution indicators affecting the water quality.③Daniel's trend test showed that the WQI values of the monitoring sections showed an increasing trend,indicating that the water quality of the monitored sections improved over the nine years.Spatially,the water quality of the monitoring sections gradually deteriorated from south to north.Water quality pollution was dominated by input from tributary ditches and human activities.Pollution prevention and control work should be further strengthened to ensure the safety of water quality of the water transfer project. |
| Key words: Huaihe Water Transfer North Project water quality assessment comprehensive pollution index of water quality assessment principal component analysis Daneil's trend test |
