Three-dimensional spatial interpolation for chlorophyll-a and its application in the Bohai Sea
Assessing the health of coastal ecosystems is crucial for maintaining ecological balance. One significant indicator of water eutrophication is the distribution of chlorophyll- a (Chl- a ), which makes obtaining a complete three-dimensional spatial distribution of Chl- a essential for assessment. Thi...
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Veröffentlicht in: | Scientific reports 2023-05, Vol.13 (1), p.7930-7930, Article 7930 |
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Sprache: | eng |
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Zusammenfassung: | Assessing the health of coastal ecosystems is crucial for maintaining ecological balance. One significant indicator of water eutrophication is the distribution of chlorophyll-
a
(Chl-
a
), which makes obtaining a complete three-dimensional spatial distribution of Chl-
a
essential for assessment. This study utilized the linear radial basis function (RBF-Linear) method to obtain a comprehensive and reasonable spatial distribution of Chl-
a
. The method was applied to obtain the three-dimensional spatial field of Chl-
a
concentration in the Bohai Sea in March, May, August, and October from 2016 to 2018. The distribution pattern of Chl-
a
concentration in the Bohai Sea displayed characteristic spatial and temporal variations. Spatially, high Chl-
a
concentration was most concentrated in coastal waters, particularly in estuaries and mariculture areas. Temporally, there were two peaks in March and August. The total Chl-
a
and areas with high Chl-
a
concentration in four sub-regions of the Bohai Sea were also calculated to enable a comprehensive assessment of the marine ecological environment. By analyzing the temporal and spatial variation of Chl-
a
in the Bohai Sea and evaluating the marine ecological environment, we confirmed the feasibility and rationality of RBF-Linear. Our findings have the potential to contribute to improve the accuracy of ecological models and assessment of the satellite products. |
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ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-023-35123-6 |