남강댐 지역 Chl-a의 시공간적 분포특성 및 수질인자와의 상관관계 분석
Spatio-temporal Distribution Characteristics of Chlorophyll-a and Correlation Analysis with Water Quality Factors in the Namgang Dam Region
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This study investigates the relationship between Chl-a concentration and various water quality factors, including temperature, nutrients (TN, TP), TOC, COD, and BOD, in the Namgang Dam region from 2007 to 2023. The correlation analysis between Chl-a and water quality parameters was conducted using the Pearson method, and the cluster analysis of Chl-a was performed using the average linkage method. At Namgang Dam Site 1, Chl-a concentration shows positive correlations with TOC (0.300), TP (0.302), BOD (0.272), and water temperature (0.309). At Site 2, Chl-a shows positive correlations with water temperature (0.273), COD (0.229), TP (0.379), and TOC (0.295). At Site 3, Chl-a concentration has significant positive correlations with COD (0.265), TOC (0.304), TP (0.277), and water temperature (0.302), indicating that these factors play important roles in the growth of phytoplankton. A strong correlation between Chl-a and both TOC and TP, with TP being a major contributor to algal growth, suggesting that phosphorus is a key limiting factor. Conversely, dissolved oxygen (DO) showed a negative correlation, indicating that as algal growth progresses, DO levels decrease, potentially impacting aquatic health negatively. Spatial distribution analysis showed that Chl-a levels were lower upstream and increased significantly downstream, influenced by reduced flow, higher temperatures, and nutrient inflow from agricultural and industrial activities. Dendrogram analysis indicated that certain sites along the Deokcheon and Namgang rivers exhibited similar Chl-a patterns, forming clusters, while the Geungho River site was distinct, suggesting unique water quality characteristics. These findings provide critical insights for predicting and managing algal blooms in the Namgang Dam area, emphasizing the importance of tailored regional water quality management strategies.
Abstract
This study investigates the relationship between Chl-a concentration and various water quality factors, including temperature, nutrients (TN, TP), TOC, COD, and BOD, in the Namgang Dam region from 2007 to 2023. The correlation analysis between Chl-a and water quality parameters was conducted using the Pearson method, and the cluster analysis of Chl-a was performed using the average linkage method. At Namgang Dam Site 1, Chl-a concentration shows positive correlations with TOC (0.300), TP (0.302), BOD (0.272), and water temperature (0.309). At Site 2, Chl-a shows positive correlations with water temperature (0.273), COD (0.229), TP (0.379), and TOC (0.295). At Site 3, Chl-a concentration has significant positive correlations with COD (0.265), TOC (0.304), TP (0.277), and water temperature (0.302), indicating that these factors play important roles in the growth of phytoplankton. A strong correlation between Chl-a and both TOC and TP, with TP being a major contributor to algal growth, suggesting that phosphorus is a key limiting factor. Conversely, dissolved oxygen (DO) showed a negative correlation, indicating that as algal growth progresses, DO levels decrease, potentially impacting aquatic health negatively. Spatial distribution analysis showed that Chl-a levels were lower upstream and increased significantly downstream, influenced by reduced flow, higher temperatures, and nutrient inflow from agricultural and industrial activities. Dendrogram analysis indicated that certain sites along the Deokcheon and Namgang rivers exhibited similar Chl-a patterns, forming clusters, while the Geungho River site was distinct, suggesting unique water quality characteristics. These findings provide critical insights for predicting and managing algal blooms in the Namgang Dam area, emphasizing the importance of tailored regional water quality management strategies.
참고문헌 (16)
- Çamdevýren, H, "Use of principal component scores in multiple linear regression models for prediction of Chlorophyll-a in reservoirs", Ecological Modelling, 181(2-3), pp.581~589 (2005)[DOI]
- Chang, M., "Exploring how cyanobacterial traits affect nutrient loading thresholds in shallow lakes : a modelling approach", Water, 12, pp.2467~ (2020)[DOI]
- Dai, R., "A review on factors affecting microcystins production by algae in aquatic environments", World Journal of Microbiology and Biotechnology, 32(3), pp.1~7 (2016)[DOI]
- Improvements to harmful algal bloom management framework and policy to reflect changes in water environment and climate, "Han, H. J.", KEI, ~, pp.KEI Research Report 2014-12 (2014)
- Jeon, Y. H., "Status and causes of cyanobacterial blooming in the downstream of Jecheon Stream", Korean Journal of Environmental Ecology, 55(2), pp.111~119 (2022)[DOI]
- Jones, J. R., "Prediction of phosphorus and chlorophyll levels in lakes", Journal of the Water Pollution Control Federation, 48(9), pp.2176~2182 (1976)
- Jung, S. Y., "Analysis of water quality factor and correlation between water quality and Chl-a in middle and downstream weir section of Nakdong River", Journal of the Korean Society of Environmental Engineering, 39(2), pp.89~96 (2017)[DOI]
- Kim, S. J., "Analysis of environmental fac tors associated with cyanobacteria dominance in Baekje Weir and Juksan Weir", Journal of Korean Society on Water Environment, 35, pp.257~270 (2019)[DOI]
- Kotak, B. G., "Role of chemical and physical variables in regulating microcystin-LR concentration in phytoplankton of eutrophic lakes", Canadian Journal of Fisheries and Aquatic Sciences, 57, pp.1584~1593 (2000)[DOI]
- Lim, J. S., "Evaluation of correlation between chlorophyll-A and multiple parameters by multiple linear regression analysis", Journal of the Korean Society of Environmental Engineering, 37(5), pp.253~261 (2015)[DOI]
- Newell, S. E., "Reduced forms of nitrogen are a driver of non-nitrogenfixing harmful cyanobacterial blooms and toxicity in Lake Erie", Harmful Algae, 81, pp.86~93 (2019)[DOI]
- Orihel, D. M., "High microcystin concentrations occur only at low nitrogen-to-phosphorus ratios in nutrient-rich Canadian lakes", Canadian Journal of Fisheries and Aquatic Sciences, 69(9), pp.1457~1462 (2012)[DOI]
- Park, H. G., "A study on the influence of water quality on the upper stream of Hap-chun lake", Journal of the Korean Society of Environmental Engineering, 35(2), pp.94~100 (2013)[DOI]
- Song, E. S., "Long-term trend analysis of chlorophyll a and water quality in the Yeongsan River", Journal of Korean Limnology, 45(3), pp.302~313 (2012)
- Wang, S., "Spatial and seasonal variations of chlorophyll a in Zhanjiang Bay, China, and controlling factors", Frontiers in Marine Science, 11, pp.1329864~ (2024)[DOI]
- Yoon, C. H., "Comparative analysis on seasonal water quality factors in Juam Dam", Journal of Korea Society of Environmental Administration, 18(3), pp.115~123 (2012)