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Study on the characteristics and diffusion fluxes of nutrients and metal elements in shallow sediment porewater of Shenzhen Bay and Maozhou River
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Manhua Luo1, 2, Licong Zhang2, Hailong Li1, 2, Yuehua Guo3, Kai Xiao2, *
Haiyang Xuebao | 2022, 44(8) : 11 - 22
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Haiyang Xuebao | 2022, 44(8): 11-22
• Article •
Study on the characteristics and diffusion fluxes of nutrients and metal elements in shallow sediment porewater of Shenzhen Bay and Maozhou River
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Manhua Luo1, 2, Licong Zhang2, Hailong Li1, 2, Yuehua Guo3, Kai Xiao2, *
Affiliations
  • 1. School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
  • 2. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
  • 3. CCCC-FHEC Ecological Engineering Co. Ltd., Shenzhen 518107, China
Published: 2022-08-01 doi: 10.12284/hyxb2022162
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In order to understand the distribution characteristics, relationships and diffusion fluxes of nutrients and metal elements across the sediment-water interface, we investigated the vertical profiles of nutrients and metal elements through the diffusive gradient in thin-films (DGT) technology in Shenzhen Bay (SZB) and Maozhou River (MZR). The two-dimensional high-resolution available sulfur (DGT-labile S) distributions were also synchronously measured. The results showed that the mean concentrations of ${\rm{NH}}_4^+ $, P and S2− and heavy metals of Cd, Co, Cu, Fe, Ni, Pb and Zn in porewater of MZR were significantly higher than those in the overlying water and the SZB, except for ${\rm{NO}}_3^- $ and Mo. The pollution degree of nutrients and metal elements in porewater of MZR was generally higher than that in SZB, but the pollutants of nutrients and metal elements in SZB were more than those in MZR. The spatial distribution of DGT-labile S in MZR indicated the distinguish bioturbation-induced tubes, which enhanced the spatial heterogeneity and led the increasing of solute concentrations with sediment depths. The diffusion fluxes of nutrients and metal elements ranged from −0.27 μg/(cm2·d) to 0.0065 μg/(cm2·d) in SZB, and from −0.061μg/(cm2·d) to 0.069 μg/(cm2·d) in MZR.

Shenzhen  /  diffusive gradient in thin-films  /  sediment  /  nutrients  /  heavy metals
Manhua Luo, Licong Zhang, Hailong Li, Yuehua Guo, Kai Xiao. Study on the characteristics and diffusion fluxes of nutrients and metal elements in shallow sediment porewater of Shenzhen Bay and Maozhou River[J]. Haiyang Xuebao, 2022 , 44 (8) : 11 -22 . DOI: 10.12284/hyxb2022162
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Year 2022 volume 44 Issue 8
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Article Info
doi: 10.12284/hyxb2022162
  • Receive Date：2022-03-17
  • Online Date：2026-02-01
  • Published：2022-08-01
Article Data
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History
  • Received：2022-03-17
  • Revised：2022-04-25
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Affiliations
    1. School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
    2. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
    3. CCCC-FHEC Ecological Engineering Co. Ltd., Shenzhen 518107, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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