Changes in atmospheric nitrogen and phosphorus deposition and their impact on water quality in Lake Kasumigaura, Japan
© 2025 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/).
| Veröffentlicht in: | Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 92(2025), 3 vom: 01. Aug., Seite 547-562 |
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| Weitere Verfasser: | , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Water science and technology : a journal of the International Association on Water Pollution Research |
| Schlagworte: | Journal Article Lake Kasumigaura bulk deposit sampling dry deposition eutrophication long-term monitoring wet deposition Phosphorus 27YLU75U4W Nitrogen mehr... |
| Zusammenfassung: | © 2025 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/). Atmospheric deposition affects both aquatic and terrestrial ecosystems. In this study, the atmospheric deposition of nitrogen (N) and phosphorus (P) was investigated in Lake Kasumigaura, Japan's second-largest lake, for approximately seven years. Seasonal variations in the total N (TN) and total P (TP) fluxes tended to be higher in spring and lower from fall to winter. The annual variations could be categorized into three distinct periods in conjunction with the precipitation trend. The estimated annual fluxes based on these three periods showed that the TN flux was accurately predicted. A comparison of the results of this study with those of studies conducted around 1980 reveals that the concentration of dissolved inorganic N in wet deposition has declined. This suggests that decreased N oxide (NOX) concentrations due to air pollution control measures contribute to the decrease in the nitrate (NO3-N) flux in atmospheric deposition. Despite the reduction in N fluxes from atmospheric deposition, monthly calculations of the impact of atmospheric deposition on Lake Kasumigaura revealed that the total inflow load reached a maximum of 17% for TN and 26% for TP |
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| Beschreibung: | Date Completed 26.08.2025 Date Revised 26.08.2025 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 0273-1223 |
| DOI: | 10.2166/wst.2025.116 |