摘要
于2002年8月10～18日和2003年8月12～28日对渤海海区进行了海水水质调查。结果表明,调查海域化学耗氧量(COD)平均浓度分别为0.70 mg/L±0.21 mg/L和0.63 mg/L±0.18 mg/L,其中相对高值区(>1 mg/L)主要分布在辽东湾北部,莱州湾南部和中央海区西北部海域,而相对低值区(<0.6 mg/L)主要分布在中央海区东南部。分析表明,调查海域COD浓度不仅远远低于国家一类海水水质标准,而且也大大低于渤海沿岸水。进一步分析表明,COD对于调查海域富营养化的贡献仅为1/4左右,这一结果证明了造成渤海海区富营养化的化学污染物不是COD。
Two cruises for water quality examination have been carried out in Bohai Sea, china from Aug. 10^th to 18^th 2002 and from Aug. 12^th to 28^th 2003. In the study area, the average concentrations of chemical oxygen demand （COD） were 0.70 mg/L±0.21 mg/L and 0.63 mg/L±0.18 mg/L in the summer of 2002 and 2003, respectively. The value highs were in Laizhou Bay and the northwest of the occourred area; while the values lows （〈0.6 mg/L） mainly occourred at the southeast of the area. In the whole survey area, the COD concentration could not only meet the standard for first-class seawater quality, but also was significantly lower than the COD concentration of the coastal water. In the research area, the COD contribution to the eutrophication accounted for only one-fourth of the total, and it was confirmed that COD was not the primary chemical contamination causing eutrophication in Bohai Sea.
出处
《海洋科学》
CAS
CSCD
北大核心
2005年第9期71-75,共5页
Marine Sciences
基金
国家自然科学基金(40136020
40376033)
国家教育部博士点基金资助项目(20020423006)
关键词
渤海
COD
富营养化
贡献
Bohai Sea
COD~ eutrophication~ contribution
