Distribution of nutrients and eutrophication assessment in the Bohai Sea of China

Xiulin Wang; Zhengguo Cui; Quan Guo; Xiurong Han; Jiangtao Wang

doi:10.1007/s00343-009-0177-x

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Distribution of nutrients and eutrophication assessment in the Bohai Sea of China

OriginalPaper | Updated：2023-05-16

- Distribution of nutrients and eutrophication assessment in the Bohai Sea of China
- Distribution of nutrients and eutrophication assessment in the Bohai Sea of China
- 海洋湖沼学报（英文） 2009年27卷第1期页码：177-183
- Affiliations：
  
  1. Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China
  2. Marine Pollution Eco-Chemistry Laboratory College of Chemistry and Chemical Engineering Ocean University of China
  3. Qingdao Textile Fiber Inspection Institute
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (No. 40136020), Key International Technology Cooperation Plan (No. 2004DFA03600) and the National Basic Research Program of China (973 Program, No. 2005CB422305)
- DOI：10.1007/s00343-009-0177-x
  中图分类号：
- 网络首发：2009-03-27，
  
  纸质出版：2009
- Accepted：
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Distribution of nutrients and eutrophication assessment in the Bohai Sea of China[J]. 海洋湖沼学报（英文）, 2009,27(1):177-183.

Wang, X., Cui, Z., Guo, Q. et al. Distribution of nutrients and eutrophication assessment in the Bohai Sea of China., Chin. J. Ocean. Limnol. 27, 177–183 (2009). https://doi.org/10.1007/s00343-009-0177-x
Distribution of nutrients and eutrophication assessment in the Bohai Sea of China[J]. 海洋湖沼学报（英文）, 2009,27(1):177-183. DOI： 10.1007/s00343-009-0177-x.

Wang, X., Cui, Z., Guo, Q. et al. Distribution of nutrients and eutrophication assessment in the Bohai Sea of China., Chin. J. Ocean. Limnol. 27, 177–183 (2009). https://doi.org/10.1007/s00343-009-0177-x DOI：

摘要

Abstract

Water samples were collected in 120 stations in the Bohai Sea of China to analyze the distribution of dissolved nutrients and assess the degree of eutrophication in August 2002. The result shows that the average concentration of DIN increased and the PO4-P concentration sharply decreased compared to the previous data of corresponding period. The high concentrations of DIN and PO4-P occurred in coastal waters

especially in the bays and some river estuaries

while the high concentrations of SiO3-Si in the surface and middle depth occurred in the central area of the Bohai Sea. The average ratio of DIN/ PO4-P was much higher than the Redfield Ratio (16:1). Apparently

PO4-P was one of the limiting nutrient for phytoplankton growing in the sea. The average concentrations of DON and DOP were higher than their inorganic forms. The results of eutrophication assessment show that 22.1% of all stations were classified as violating the concentration levels of the National Seawater Quality Standard (GB 3097-1997) for DIN and only 3.9% for PO4-P. The average eutrophication index in the overall area was 0.21±0.22 and the high values occurred in Bohai Bay

Liaodong Bay and near the Yellow River estuary. This means that the state of eutrophication was generally mesotrophic in the Bohai Sea

but relatively worse in the bays

especially some river estuaries.

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references

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