| 南水北调东线一期工程输水干线水质变化趋势分析 |
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| 引用本文： | 张婷婷,杨 刚,张建国,王 萍,陈雅丽,曾凤连. 南水北调东线一期工程输水干线水质变化趋势分析[J]. 水生态学杂志, 2022, 43(1): 8-15 |
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| 作者姓名： | 张婷婷 杨 刚 张建国 王 萍 陈雅丽 曾凤连 |
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| 作者单位： | 生态环境部淮河流域生态环境监督管理局淮河流域生态环境监测与科研中心,生态环境部淮河流域生态环境监督管理局淮河流域生态环境监测与科研中心,生态环境部淮河流域生态环境监督管理局淮河流域生态环境监测与科研中心,生态环境部淮河流域生态环境监督管理局淮河流域生态环境监测与科研中心,生态环境部淮河流域生态环境监督管理局淮河流域生态环境监测与科研中心,生态环境部淮河流域生态环境监督管理局淮河流域生态环境监测与科研中心 |
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| 摘 要： | 探究南水北调东线一期工程输水干线水质变化情况,为水生态保护提供基础资料。基于2003年开工建设至今29个断面长序列监测数据,采用单指标水质评价法、主成分分析法、Spearman秩相关系数法、综合污染指数法和t检验法,研究输水干线水质变化总体趋势和主要污染指标时空变化特征。结果表明:输水干线水质整体向好,采样点优良比例2020年较2003年增加了33.1%。2003-2020年,氨氮、五日生化需氧量、化学需氧量、总氮和高锰酸盐指数浓度呈显著下降趋势,总磷浓度下降但变化趋势相对平稳;各点位调水期综合水质指数优于年内非调水期,调水对主要污染指标的浓度变化均有显著影响(Sig.<0.05)。建设初期,主要污染指标浓度空间差异显著,输水干线后半段污染程度相对较高,梁济运河段多个指标已达劣类;建成通水之际,除总磷外,主要污染指标浓度显著下降,空间差异显著缩小,部分指标仍呈现后半段浓度较高的空间特征;2020年,南四湖及梁济运河段水质改善效果明显,主要污染指标浓度空间差异进一步缩小。建议继续抓好污染防治,切实推进沿线生态建设与修复。
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| 关 键 词： | 南水北调东线 水质 污染指标 时空变化 |
| 收稿时间： | 2021-06-29 |
| 修稿时间： | 2021-09-07 |
Changes in the Quality of Water Flowing through the First Phase of the Eastern Route of the South-to-North Water Transfer Project |
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| ZHANG Ting-ting,YANG Gang,ZHANG Jian-guo,WANG Ping,CHEN Ya-li,ZENG Feng-lian. Changes in the Quality of Water Flowing through the First Phase of the Eastern Route of the South-to-North Water Transfer Project[J]. Journal of Hydroecology, 2022, 43(1): 8-15 |
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| Authors: | ZHANG Ting-ting YANG Gang ZHANG Jian-guo WANG Ping CHEN Ya-li ZENG Feng-lian |
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| Affiliation: | Eco-Environmental monitoring and scientific research center, Huaihe Valley Ecology and Environment Adminisrtation, Ministry of Ecology and Environment,Eco-Environmental monitoring and scientific research center, Huaihe Valley Ecology and Environment Adminisrtation, Ministry of Ecology and Environment,Eco-Environmental monitoring and scientific research center, Huaihe Valley Ecology and Environment Adminisrtation, Ministry of Ecology and Environment,Eco-Environmental monitoring and scientific research center, Huaihe Valley Ecology and Environment Adminisrtation, Ministry of Ecology and Environment,Eco-Environmental monitoring and scientific research center, Huaihe Valley Ecology and Environment Adminisrtation, Ministry of Ecology and Environment,Eco-Environmental monitoring and scientific research center, Huaihe Valley Ecology and Environment Adminisrtation, Ministry of Ecology and Environment |
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| Abstract: | |
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| Keywords: | East route of south-to-north water diversion Water quality Pollution index Time and space changes |
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