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Article

Distribution of Geochemical Fractions of Phosphorus in Surface Sediment in Daya Bay, China

by 1,2, 1,2, 1,2, 3 and 1,2,*
1
Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bio-Resource Conservation and Exploitation, South China Agricultural University, Guangzhou 510642, China
2
College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
3
Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(12), 4430; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124430
Received: 14 May 2020 / Revised: 16 June 2020 / Accepted: 16 June 2020 / Published: 19 June 2020
(This article belongs to the Section Environment and Applied Ecology)
Surface sediment samples were collected from 19 sites throughout Daya Bay, China, to study the concentrations, and spatial distributions of different fractions of phosphorus through sequential extraction methods. Like many coastal and marine areas, De-P was the dominant form of P, contributing 47.5% of TP, followed by O-P, contributing 25.5% of TP. Ex-P and Fe-P contribute the lowest to TP. The concentration of sedimentary TP ranged from 290.3~525.1 µg/g, with the average of 395.3 µg/g, which was a similar range to other estuaries and coastal areas. Based on the spatial distribution, Pearson correlation and Principal component analysis, different fractions of phosphorus showed different spatial distributions due to different sources. The molar ratio of organic carbon to phosphorus (TOC/O-P) ranged from 199 to 609, with the average of 413, which was much higher than the Redfield ratio, suggesting terrestrial sources of organic matter in Daya Bay surface sediment. The average bioavailable phosphorus was 149.6 µg/g and contributed 37.8% (24.6~56.0%) of TP, indicating that the surface sediments of Day Bay act as an important internal source of P. View Full-Text
Keywords: fractions of phosphorus; surface sediment; distribution; Daya Bay fractions of phosphorus; surface sediment; distribution; Daya Bay
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MDPI and ACS Style

Liao, H.; Pan, C.; Gan, L.; Ke, Z.; Tang, H. Distribution of Geochemical Fractions of Phosphorus in Surface Sediment in Daya Bay, China. Int. J. Environ. Res. Public Health 2020, 17, 4430. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124430

AMA Style

Liao H, Pan C, Gan L, Ke Z, Tang H. Distribution of Geochemical Fractions of Phosphorus in Surface Sediment in Daya Bay, China. International Journal of Environmental Research and Public Health. 2020; 17(12):4430. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124430

Chicago/Turabian Style

Liao, Hongping, Ciguang Pan, Lian Gan, Zhixin Ke, and Huijuan Tang. 2020. "Distribution of Geochemical Fractions of Phosphorus in Surface Sediment in Daya Bay, China" International Journal of Environmental Research and Public Health 17, no. 12: 4430. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph17124430

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