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Evaluation on sediments quality around the Yongxing Island of Xisha
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Ge Xu1, Dehong Wang1, Shiwen Wang1, Jun Shi1, Chao Yuan1, Liuyu Han1
Haiyang Xuebao | 2022, 44(1) : 137 - 146
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Haiyang Xuebao | 2022, 44(1): 137-146
• Research Note •
Evaluation on sediments quality around the Yongxing Island of Xisha
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Ge Xu1, Dehong Wang1, Shiwen Wang1, Jun Shi1, Chao Yuan1, Liuyu Han1
Affiliations
  • 1. Haikou Marine Environmental Monitoring Center Station, State Oceanic Administration, Haikou 570311, China
Published: 2022-01-15 doi: 10.12284/hyxb2022004
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Based on the investigations of surface sediments at six sampling stations of nine cruises carried out in the sea around the Yongxing Island of Xisha from 2009 to 2017, the background values of seven heavy metals are determined through the process of mathematical statistics, the contents and inter-annual variations of heavy metals are analyzed, and the contents of the heavy metals are evaluated by means of single factor standard index and potential ecological risk index. The results show that the background values of heavy metals in the sediments of the study area are low, the average level of them meet the first class of marine sediment quality, and the quality of sediment is excellent. The inter-annual variations of seven heavy metals in the sediments of the study area are slightly different and generally significant and affected obviously by the development activities on the Yongxing Island. From 2009 to 2017, the contents of Zn, Cd, Cu, Cr, As and Hg are to increase first and then decrease, while the content of Pb is to increase. The assessment by means of potential ecological risk index shows that the multi year average of potential ecological risk indexes are in the order of Cd, Hg, As, Cu, Pb, Cr, Zn, and Cd and Hg are the main potential ecological risk factors of the study area.

Yongxing Island  /  sediment  /  heavy metals  /  background values  /  inter-annual variations  /  ecological risk
Ge Xu, Dehong Wang, Shiwen Wang, Jun Shi, Chao Yuan, Liuyu Han. Evaluation on sediments quality around the Yongxing Island of Xisha[J]. Haiyang Xuebao, 2022 , 44 (1) : 137 -146 . DOI: 10.12284/hyxb2022004
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Article Info
doi: 10.12284/hyxb2022004
  • Receive Date：2021-05-04
  • Online Date：2026-02-01
  • Published：2022-01-15
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History
  • Received：2021-05-04
  • Revised：2021-07-23
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Affiliations
    1. Haikou Marine Environmental Monitoring Center Station, State Oceanic Administration, Haikou 570311, 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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