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Exploring and optimizing characterization of radionuclide fingerprint for tracking sediment source: Comparison of mangrove, seagrass,and coral reef ecosystems
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Wuhui Lin1, 5, Yunfeng Du1, Kefu Yu1, *, Jinqiu Du2, Zhenni Mo3, Yinghua Li3, Xianwen He4, Minting Mo1
Haiyang Xuebao | 2023, 45(12) : 58 - 66
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Haiyang Xuebao | 2023, 45(12): 58-66
• Article •
Exploring and optimizing characterization of radionuclide fingerprint for tracking sediment source: Comparison of mangrove, seagrass,and coral reef ecosystems
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Wuhui Lin1, 5, Yunfeng Du1, Kefu Yu1, *, Jinqiu Du2, Zhenni Mo3, Yinghua Li3, Xianwen He4, Minting Mo1
Affiliations
  • 1School of Marine Sciences, Guangxi University/Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Nanning 530004, China
  • 2National Marine Environmental Monitoring Center, Dalian 116023, China
  • 3Guangxi Academy of Oceanography, Nanning 530022, China
  • 4Radiation-Environment Management and Monitoring Station of Guangxi Zhuang Autonomous Region, Nanning 530022, China
  • 5Polar and Marine Research Institute, Jimei University, Xiamen 361021, China
Published: 2023-12-31 doi: 10.12284/hyxb2023175
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Sediment source is a key issue in sedimentology. Although sediment geochemistry is an important tool in sedimentology, the explorations and applications of radionuclides in sediment geochemistry are still limited. In this study, naturally occurring radionuclides (238U, 226Ra, 228Ra, and 40K) in sediments were simultaneously measured using a high-purity germanium γ-spectrometer in three typical ecosystems of mangrove, seagrass, and coral reefs. The distribution characteristics of radionuclides in sediments from the these ecosystems were discussed in one-dimensional view of activity level, two-dimensional view of radionuclide pairs and activity ratio, and three-dimensional view of ternary diagram of radionuclides to identify distinct sources of sediments. Ternary diagram of 238U-232Th(228Ra)-40K/10 in sediments was applied in the China different seas for tracking distinct sediment sources. This study emphasized that the three-dimensional view of ternary diagram of 238U-232Th(228Ra)-40K/10 comprehensively exhibited the information of activity level, composition, and spatial distribution area of radionuclides. In conclusion, ternary diagram of 238U-232Th(228Ra)-40K/10 may be an optimized method for source identification in sediments and provide a supplement to the existing tools of geochemical proxies.

radionuclide  /  geochemical proxy  /  sediment source  /  mangrove  /  coral reefs  /  seagrass
Wuhui Lin, Yunfeng Du, Kefu Yu, Jinqiu Du, Zhenni Mo, Yinghua Li, Xianwen He, Minting Mo. Exploring and optimizing characterization of radionuclide fingerprint for tracking sediment source: Comparison of mangrove, seagrass,and coral reef ecosystems[J]. Haiyang Xuebao, 2023 , 45 (12) : 58 -66 . DOI: 10.12284/hyxb2023175
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Year 2023 volume 45 Issue 12
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Article Info
doi: 10.12284/hyxb2023175
  • Receive Date：2023-02-21
  • Online Date：2025-12-28
  • Published：2023-12-31
Article Data
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History
  • Received：2023-02-21
  • Revised：2023-06-30
Funding
Affiliations
    1School of Marine Sciences, Guangxi University/Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Nanning 530004, China
    2National Marine Environmental Monitoring Center, Dalian 116023, China
    3Guangxi Academy of Oceanography, Nanning 530022, China
    4Radiation-Environment Management and Monitoring Station of Guangxi Zhuang Autonomous Region, Nanning 530022, China
    5Polar and Marine Research Institute, Jimei University, Xiamen 361021, 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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