首页|期刊导航|中国海洋湖沼学报（英文版）|Distribution of nutrients and eutrophication assessment in the Bohai Sea of China
中国海洋湖沼学报（英文版）2009，Vol.27Issue(1)：177-183,7.DOI:10.1007/s00343-009-0177-x
Distribution of nutrients and eutrophication assessment in the Bohai Sea of China
Distribution of nutrients and eutrophication assessment in the Bohai Sea of China
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.关键词
eutrophication aassessment/nutrients/distribution/Bohai SeaKey words
eutrophication aassessment/nutrients/distribution/Bohai Sea分类
海洋学引用本文复制引用
WANG Xiulin,CUI Zhengguo,GUO Quan,HAN Xiurong,WANG Jiangtao..Distribution of nutrients and eutrophication assessment in the Bohai Sea of China[J].中国海洋湖沼学报（英文版）,2009,27(1):177-183,7.基金项目
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) （No. 40136020）
