Spatiotemporal variations and influencing factors of euphotic depth and primary productivity in the Zhanjiang Bay

Yu Guo; Zhong Yafeng; Fu Dongyang; Chen Fajin; Liu Dazhao; Xu Huabing; Liu Bei

doi:10.12284/hyxb2022136

Volume 44 Issue 8

Aug. 2022

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Yu Guo，Zhong Yafeng，Fu Dongyang, et al. Spatiotemporal variations and influencing factors of euphotic depth and primary productivity in the Zhanjiang Bay[J]. Haiyang Xuebao，2022, 44(8)：31–41 doi: 10.12284/hyxb2022136

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Spatiotemporal variations and influencing factors of euphotic depth and primary productivity in the Zhanjiang Bay

doi: 10.12284/hyxb2022136

Yu Guo^1
,,
Zhong Yafeng^{2
,
,},
Fu Dongyang^{1, 4},
Chen Fajin³,
Liu Dazhao^{1, 4},
Xu Huabing^{1
,
,},
Liu Bei¹

1.
College of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China
2.
College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China
3.
College of Oceanography and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China
4.
Marine Resources Big Data Center of South China Sea, Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524025, China

Received Date: 2021-08-28
Rev Recd Date: 2022-01-15

Available Online: 2022-08-15

Publish Date: 2022-08-15

Abstract

Abstract

The temporal and spatial variation characteristics and influencing factors of euphotic depth and primary productivity in the Zhanjiang Bay were studied by applying voyage data of four seasons from 2016 to 2017．The results showed that the average value of euphotic depth was (6.95±3.17) m, and the spatial variations were more obvious than the seasonal variations. There was a significant positive correlation between K_d(PAR) and turbidity, as the R² of established linear regression model was 0.73 (p<0.01), indicating that suspended particles on euphotic depth was the dominant attenuation factor in the Zhanjiang Bay. The average value of primary productivity obtained by VGPM model was (639.53±427.95) mg/(m²·d), and its temporal and spatial characteristics were basically consistent with euphotic depth, which mean euphotic depth explained the temporal and spatial distribution pattern of primary productivity better than chlorophyll a concentration.
- euphotic depth,
- primary productivity,
- K_d(PAR),
- turbidity,
- VGPM,
- Zhanjiang Bay

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References(41)

References

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