| Issue |
E3S Web Conf.
Volume 603, 2025
International Symposium on Green and Sustainable Technology (ISGST 2024)
|
|
|---|---|---|
| Article Number | 01020 | |
| Number of page(s) | 7 | |
| Section | Environmental Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202560301020 | |
| Published online | 15 January 2025 | |
Evaluation of spatial variation and nutritional status of environmental quality in the surface seawater from fishing harbours of Hainan island
1 Zhai Mingguo Academician Workstation, School of Engineering and Technology, University of Sanya, Hainan, 572000, China
2 School of New Energy and Intelligent Networked Automobile, University of Sanya, Hainan, 572000, China
* Corresponding author: bingnanren@sanyau.edu.cn
To investigate the nutrient distribution characteristics and the eutrophication status of the main fishing ports in Hainan Province, this study analyzed the 2021 seawater quality indicators, including biochemical oxygen demand (BOD5), chemical oxygen demand (COD), chlorophyll a (Chl a), ammonia nitrogen (NH4-N), nitrite nitrogen (NO2-N), nitrate nitrogen (NO3-N), and soluble active phosphate (DIP). The single-factor contaminant index method was employed to evaluate the water quality, revealing that the levels of COD, BOD5, and DIP surpass the national seawater quality standards for Type IV. The eutrophication index (EI) of the different fishing ports ranges from 2.38 to 56.29, indicating a high level of eutrophication.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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