广西4个港湾海洋环境质量现状调查

Investigation of Marine Environmental Quality in the Offshore of Four Bays of Guangxi

关键词:  环境质量  近海  港湾

Key words:  environmental quality  offshore  bay

摘要:

分别在1996年夏冬季对广西沿岸铁山港、廉洲湾、钦州湾、防城湾海洋环境质量现状进行调查,调查测站29个,其中河口区3个,港口区5个,养殖区7个,浅海区14个。调查项目包括pH值、溶解氧、化学耗氧量、油类、Cu、Pb、Zn、Cd、Hg、无机磷、无机氮、硫化物和有机质。除近岸局部区域外,大部分海域的水质符合一类海水水质标准,港湾沉积物和生物体污染较轻,海洋环境质量状况良好。廉洲湾海域的污染要比其他3个港湾的严重。

Abstract:

The environment quality was investigated in the offshore of Tieshan, Lianzhou, Qinzhou and Fangcheng bays, Guangxi in summer and winter of 1996. Among 29 measuring spots, there are 3 spots in the river portal area, 5 in the harbor area,7 in the cultivating area and 14 in the shallow sea area. The measure items include pH value, dissolve of oxygen, oxygen consumption, oil, Cu, Pb, Zn, Cd, Hg, inorganic phosphorous, inorganic nitrogen, sulfide and organic matter. The quality of sea water in most parts of investigated sea area accords with the national criteria of the first sea water. There is light pollution in residue and organism in the bays, which indicates the marine environment is kept in a good status. But the pollution in the sea area of Lianzhou bay is heavier than that in the other three bays.