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Article

Analysis of Factors Influencing the Trophic State of Drinking Water Reservoirs in Taiwan

1
Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
2
Department of Environmental Engineering, College of Engineering, Chung Yuan Christian University, Zhongli 320, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editors: Pankaj Kumar and Ram Avtar
Water 2021, 13(22), 3228; https://doi.org/10.3390/w13223228
Received: 13 October 2021 / Revised: 9 November 2021 / Accepted: 11 November 2021 / Published: 14 November 2021
Eutrophication is an environmental pollution problem that occurs in natural water bodies. Regression analyses with interaction terms are carried out to identify the factors influencing the Shimen, Mingde, and Fongshan Reservoirs in Taiwan. The results indicate that the main factor influencing these reservoirs is total phosphorus. In the Shimen and Mingde Reservoirs, the influence of total phosphorus, when interacting with other factors, on water quality trophic state is more serious than that of total phosphorus per se. This implies that the actual influence of total phosphorus on the eutrophic condition could be underestimated. Furthermore, there was no deterministic causality between climate and water quality variables. In addition, time lagged effects, or the influence of their interaction with other variables, were considered separately in this study to further determine the actual relationships between water trophic state and influencing factors. The influencing patterns for three reservoirs are different, because the type, size, and background environment of each reservoir are different. This is as expected, since it is difficult to predict eutrophication in reservoirs with a universal index or equation. However, the multiple linear regression model used in this study could be a suitable quick-to-use, case-by-case model option for this problem. View Full-Text
Keywords: eutrophication; variable interactions; multiple linear regression; reservoir eutrophication; variable interactions; multiple linear regression; reservoir
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MDPI and ACS Style

Hung, C.-W.; Chiang Hsieh, L.-H. Analysis of Factors Influencing the Trophic State of Drinking Water Reservoirs in Taiwan. Water 2021, 13, 3228. https://doi.org/10.3390/w13223228

AMA Style

Hung C-W, Chiang Hsieh L-H. Analysis of Factors Influencing the Trophic State of Drinking Water Reservoirs in Taiwan. Water. 2021; 13(22):3228. https://doi.org/10.3390/w13223228

Chicago/Turabian Style

Hung, Cheng-Wei, and Lin-Han Chiang Hsieh. 2021. "Analysis of Factors Influencing the Trophic State of Drinking Water Reservoirs in Taiwan" Water 13, no. 22: 3228. https://doi.org/10.3390/w13223228

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