Long-term variations in water quality in the lower Han River
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shin, M.-S. | - |
dc.contributor.author | Lee, J.-Y. | - |
dc.contributor.author | Kim, B. | - |
dc.contributor.author | Bae, Y.J. | - |
dc.date.accessioned | 2021-09-07T20:24:30Z | - |
dc.date.available | 2021-09-07T20:24:30Z | - |
dc.date.created | 2021-06-17 | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 1975-020X | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/114628 | - |
dc.description.abstract | The Han River is the main water resource for the Seoul metropolitan area (Korea) with twenty million people relying on it, and its eutrophication is of great concern for preserving drinking water quality. In this study, long-term trends in biological oxygen demand (BOD), chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (TN), and suspended solids at a downstream site of the river (St. Gui) are presented from 1989 to 2006 using data from the Ministry of the Environment. Longitudinal distributions in T P, TN, and chlorophyll-a concentration were measured in the downstream reaches between the Paldang Dam and Haengju Bridge. The long-term average BOD was 1.82 ± 0.67 mg/L and showed a decreasing trend, whereas COD did not vary consistently with a long-term average of 3.46 ± 0.87 mg/L, and consequently, the BOD/COD ratio decreased. This pattern can be interpreted as an increasing trend in the non-biodegradable organic matter/biodegradable organic matter ratio, which can be attributed to enhanced sewage treatment. The long-term record for concentration did not show a consistent delate trend, whereas the seasonal variation was remarkably large with high concentrations during the food season. In contrast, phytoplankton density was higher during low-fow seasons. It seemed that hydraulic residence time was the major factor controlling phytoplankton, as is typical in a lotic environment, which overwhelmed the effects of other factors such as temperature, nutrients, and solar radiation. In conclusion, BOD has decreased in the lower Han River system, but non biodegradable organic matter and phosphorus concentrations have not decreased. © The Ecological Society of Korea. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.subject | Viscum album | - |
dc.title | Long-term variations in water quality in the lower Han River | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Bae, Y.J. | - |
dc.identifier.doi | 10.5141/JEFB.2011.005 | - |
dc.identifier.scopusid | 2-s2.0-79955444670 | - |
dc.identifier.bibliographicCitation | Journal of Ecology and Field Biology, v.34, no.1, pp.31 - 37 | - |
dc.relation.isPartOf | Journal of Ecology and Field Biology | - |
dc.citation.title | Journal of Ecology and Field Biology | - |
dc.citation.volume | 34 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 31 | - |
dc.citation.endPage | 37 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | Viscum album | - |
dc.subject.keywordAuthor | Han river | - |
dc.subject.keywordAuthor | Long-term monitoring | - |
dc.subject.keywordAuthor | Phytoplankton | - |
dc.subject.keywordAuthor | Water quality | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.