Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu
The plain river network area is strongly influenced by human activities, with flat terrain, weak hydrodynamics and poor water quality. Previous studies have mostly focused on water quality categories, lacking an overall study of the pollution characteristics of water bodies and their changing trends...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/43/e3sconf_icemee2023_03006.pdf |
| _version_ | 1827878865917181952 |
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| author | Wang Lixin Guo Wanying Wang Ziming Yao Pengcheng Hu Guojian You Aiju |
| author_facet | Wang Lixin Guo Wanying Wang Ziming Yao Pengcheng Hu Guojian You Aiju |
| author_sort | Wang Lixin |
| collection | DOAJ |
| description | The plain river network area is strongly influenced by human activities, with flat terrain, weak hydrodynamics and poor water quality. Previous studies have mostly focused on water quality categories, lacking an overall study of the pollution characteristics of water bodies and their changing trends. In order to comprehensively grasp the water pollution situation of the river network in the northern Yu Plain, this study scientifically analysed the water quality characteristics of the river network in the northern Yu Plain and its correlation with rainfall through regression analysis and MK mutation test based on the long series of water quality and rainfall data of the Dongjin River and Unity River in the northern Yu Plain from 2017-2021. The results show that the correlation between water quality and rainfall in the river network of the northern Yu Plain is not significant, reflecting that the pollution in the watershed is still controlled by point sources, but there is a trend for the Unity River to change to non-point source control; the CODMn, NH3-N and TP of the Dongjin River and Unity River all show a high positive correlation, and the correlation of the Dongjin River is higher than that of the Unity River; the MK mutation test shows that there is no significant mutation point in the Dongjin River in the last five years, and the Unity River has no significant mutation point in the last five years. The MK mutation test shows that there is no significant mutation point in Dongjin River in the past 5 years, and there is a sudden change in water quality in Unity River from 2017 to 2018, and the water quality indexes show a decreasing trend in general, but remain stable in recent years. The study aims to academically reveal the dominant factors, pollutant characteristics and water quality trends of pollutants in rivers in the northern Yu Plain, and to propose scientific references for the pollution prevention and control of other plain river networks. |
| first_indexed | 2024-03-12T17:57:35Z |
| format | Article |
| id | doaj.art-89f413daa865437591ae053ce3794d2e |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-12T17:57:35Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-89f413daa865437591ae053ce3794d2e2023-08-02T13:18:51ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014060300610.1051/e3sconf/202340603006e3sconf_icemee2023_03006Characteristics and Changing Trend of Water Pollution in North Plain of Shang YuWang Lixin0Guo Wanying1Wang Ziming2Yao Pengcheng3Hu Guojian4You Aiju5Shaoxing Shangyu District Environmental Monitoring StationCollege of Hydrology and Water Resources, Hohai UniversityZhejiang Institute of Hydraulics & Estuary(Zhejiang Surveying Institute of Estuary and Coast)Zhejiang Institute of Hydraulics & Estuary(Zhejiang Surveying Institute of Estuary and Coast)Zhejiang Institute of Hydraulics & Estuary(Zhejiang Surveying Institute of Estuary and Coast)Zhejiang Institute of Hydraulics & Estuary(Zhejiang Surveying Institute of Estuary and Coast)The plain river network area is strongly influenced by human activities, with flat terrain, weak hydrodynamics and poor water quality. Previous studies have mostly focused on water quality categories, lacking an overall study of the pollution characteristics of water bodies and their changing trends. In order to comprehensively grasp the water pollution situation of the river network in the northern Yu Plain, this study scientifically analysed the water quality characteristics of the river network in the northern Yu Plain and its correlation with rainfall through regression analysis and MK mutation test based on the long series of water quality and rainfall data of the Dongjin River and Unity River in the northern Yu Plain from 2017-2021. The results show that the correlation between water quality and rainfall in the river network of the northern Yu Plain is not significant, reflecting that the pollution in the watershed is still controlled by point sources, but there is a trend for the Unity River to change to non-point source control; the CODMn, NH3-N and TP of the Dongjin River and Unity River all show a high positive correlation, and the correlation of the Dongjin River is higher than that of the Unity River; the MK mutation test shows that there is no significant mutation point in the Dongjin River in the last five years, and the Unity River has no significant mutation point in the last five years. The MK mutation test shows that there is no significant mutation point in Dongjin River in the past 5 years, and there is a sudden change in water quality in Unity River from 2017 to 2018, and the water quality indexes show a decreasing trend in general, but remain stable in recent years. The study aims to academically reveal the dominant factors, pollutant characteristics and water quality trends of pollutants in rivers in the northern Yu Plain, and to propose scientific references for the pollution prevention and control of other plain river networks.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/43/e3sconf_icemee2023_03006.pdf |
| spellingShingle | Wang Lixin Guo Wanying Wang Ziming Yao Pengcheng Hu Guojian You Aiju Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu E3S Web of Conferences |
| title | Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu |
| title_full | Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu |
| title_fullStr | Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu |
| title_full_unstemmed | Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu |
| title_short | Characteristics and Changing Trend of Water Pollution in North Plain of Shang Yu |
| title_sort | characteristics and changing trend of water pollution in north plain of shang yu |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/43/e3sconf_icemee2023_03006.pdf |
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