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2025 Vol.58, Issue 12 Preview Page

Research Article

Network-based contribution approach for analyzing water quality fluctuation characteristics in NakdongMilyang mid-watershed

네트워크기반 기여율 분석을 활용한 수질변동 특성 분석 - 낙동밀양 중권역을 대상으로

Bugeon Joa
,
Joo Suk Kob*
,
Young Do Kimc
,
Siwan Lyud
,
Dong Sop Rheee
,
Moon Hyeong Parkf
조 부건a
,
고 주석b*
,
김 영도c
,
류 시완d
,
이 동섭e
,
박 문형f
aPh.D Research, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
bPh.D Research, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
cProfessor, Division of Smart Infrastructure Engineering, Myongji University, Yongin, Korea
dProfessor, Department of Construction Systems Engineering, School of Green Engineering, Changwon National University, Changwon, Korea
eResearch Fellow, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
fResearch Fellow, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang, Korea
a한국건설기술연구원 수자원하천연구본부 박사후연구원
b한국건설기술연구원 수자원하천연구본부 박사후연구원
c명지대학교 스마트인프라공학부 교수
d국립창원대학교 스마트그린공학부 건설시스템공학전공 교수
e한국건설기술연구원 수자원하천연구본부 연구위원
f한국건설기술연구원 수자원하천연구본부 연구위원
*Corresponding Author
31 December 2025. pp. 1475-1485
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Abstract

Recent environmental changes driven by climate change have made it increasingly difficult to identify the causes of water quality degradation in river systems. The expansion of urbanization and industrial activities has further intensified water quality deterioration by increasing non-point source pollutants. Understanding the underlying causes is essential for preventing water quality decline however, research applying multivariate techniques to quantify the contributions of multiple interacting factors remains limited. Therefore, this study aimed to perform a network-based contribution analysis to examine the complex factors influencing river water quality. The Nakdong-Milyang mid-watershed, located upstream of the major intake points in the Nakdong River, was selected as the study area due to its importance in regional water quality management. Contribution analyses were conducted to identify the major pollution sources affecting water quality in the principal tributaries—Gyesung Stream, Hwapocheon Stream, and Juchoen River. By quantifying the degree to which each factor influences water quality conditions in these tributaries, the study seeks to provide a scientific basis for establishing management priorities and improving the effectiveness of watershed-scale water quality management.

Keywords
Water quality deterioration
Water quality management
Contribution analysis
Network-based approach

최근 기후변화로 인한 환경변화는 하천에서의 수질악화의 원인을 파악하는데 더욱 어려움을 주고있다. 도시화 및 산업화로 인한 비점오염물질의 증가 또한 수질악화에 영향을 미친다. 하천에서의 수질악화를 방지하기 위해서는 원인을 파악하는 것이 중요하며 따라서 본 연구에서는 수질에 영향을 미치는 복합적인 요소를 다변량 분석을 통한 기여도분석을 수행하였다. 본 연구에서는 복합적 요소에 대한 네트워크기반의 기여도 분석을 수행하고자 하였다. 낙동밀양 중권역은 낙동강 주요 취수지점 상류에 위치하여 수질관리에 중요한 지점으로 해당지역을 연구대상지역으로 설정하여 주요 지류하천에서의 수질악화에 대한 오염원인에 대한 기여율을 분석하였다. 계성천, 화포천, 주천강에 대하여 하천 수질에 영향을 미치는 대상에 대한 기여율 분석을 수행하여 수질에 미치는 영향을 정량화하고 관리 우선순위를 설정하고 수질관리에 기여하고자 한다.

키워드
수질악화
수질관리
기여도 분석
네트워크기반
References
1

Akhtar, N., Ishak, M.I S., Ahmad, M.I., Umar, K., Md Yusuff, M.S., and Anees, M.T. (2021). “Modification of the water quality index (WQI) process for simple calculation using the multi- criteria decision-making (MCDM) method: A review.” Water, Vol. 13, No. 7, pp. 905-939.

10.3390/w13070905
2

Cho, Y.C., Park, M., Shin, K., Choi, H.M., Kim, S., and Yu, S. (2019). “A study on grade classification for improvement of water quality and water quality characteristics in the Han River watershed tributaries.” Journal of Environment Impact, Vol. 28, No. 3, pp. 215-230.

10.14249/EIA.2019.28.3.215
3

Ha, D.W., Baek, J.H., Hwang, S.Y., Lee, Y.J., Lee, W.S., and Choi, J.Y. (2025). “Analysis of the pollution load contribution rate of inflowing tributaries for the sustainable management of the Seomjin River (Seombon D).” Sustainability, Vol. 17, No. 2, 411.

10.3390/su17020411
4

Jung, S.J., Lee, D.J., Hwang, K.S., Lee, K.H., Choi, K.C., Im, S.S., Lee, Y.H., Lee, J.Y., and Lim, B.J. (2012). “Evaluation of pollutant characteristics in Yeongsan River using multivariate analysis.” Korean Journal of Ecology and Environment. Vol. 45, No. 4, pp. 368-377. doi: 10.11614/KSL.2012.45.4.368.

10.11614/KSL.2012.45.4.368
5

Kim, S.E., Seo, I.W., and Choi, S.Y. (2017). “Assessment of water quality variation of a monitoring network using exploratory factor analysis and empirical orthogonal function.” Environmental Modelling & Software, Vol. 94, pp. 21-35.

10.1016/j.envsoft.2017.03.035
6

Kim, Y.Y., and Lee, S.J. (2011). “Evaluation of water quality for the Han River tributaries using multivariate analysis.” Korean Society of Environmental Engineers, Vol. 33, No. 7, pp. 501- 510. doi: 10.4491/KSEE.2011.33.7.501. 33.7.501.

10.4491/KSEE.2011.33.7.501
7

Lee, S., Jo, B., and Kim, D.Y. (2022). “Assessment of water quality index suitability of domestic watersheds.” Journal of Korea Water Resources Association, Vol. 55, No. 5, pp. 371-381.

10.3741/JKWRA.2022.55.5.371
8

Lee, Y.J., Park, M.J., Son, J.Y., Park, J.R., Kim, G.D., Hong, C.S., Gu, D.H., Lee, J.G., Noh, C.W., Shin, K.Y., and Yu, S.J. (2017). “Spatial and seasonal water quality variations of Han River tributries.” Journal of Environmental Impact Assessment, Vol. 26, No. 6, pp. 418-430. doi: 10.14249/eia.2017.26.6.418.

10.14249/eia.2017.26.6.418
9

Park, J.B., Kal, B.S., and Kim, S.M. (2019). “Application of multivariate statistical techniques to analyze the pollution characteristics of major tributaries of the Nakdong River.” Journal of Wetlands Research, Vol. 21, No. 3, pp. 215-223. doi: 10.17663/JWR.2019.21.3.215.

10.17663/JWR.2019.21.3.215
10

Seo, M., Cho, C., Im, T., Kim, S., Yoon, H., Kim, Y., and Kim, G. (2019). “Statistical analysis of the spatio-temporal water quality characteristics of the Nakdong River.” Journal of Environmental Science International, Vol. 28, No. 3, pp. 303-320.

10.5322/JESI.2019.28.3.303
11

Shim, K., Kim G., Kim S., Kim Y., and Kim J.P. (2020). “Comparison of changes in upstream and downstream water quality of tributary rivers: Gyeseong-stream and Hwapo-stream in Nakdongmiryang watershed.” Journal of Korean Society on Water Environment, Vol. 36, No. 5, pp. 445-452. doi: 10.15681/kswe.2020.36.5.445.

10.15681/kswe.2020.36.5.445
12

Yoon, H., Kim, J., Chae, M., Cho, Y. and Cheon. S. (2019). “Assessment of water quality in the Miho Stream using multivariate statistics.” Journal of Environment Impact, Vol. 28, No. 4, pp. 373-386.

10.14249/EIA.2019.28.4.373
13

Yu, J.H., Lee, H.S., Lim, B.R., Kang, J.H., Ahn, T.U., and Shin, H.S. (2020). “Analysis of pollution characteristics in the mainstream and its tributaries of Gongneung stream using water quality index and pollution load data.” Journal of Korean Society on Water Environment, Vol. 36, No. 2, pp. 125-136.

Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 58
  • No :12
  • Pages :1475-1485
  • Received Date : 2025-11-24
  • Revised Date : 2025-12-03
  • Accepted Date : 2025-12-03
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.12.1475
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