摘要
根据2003年7月至2004年6月廉州湾近岸水质监测资料,以DIN、PO4-P、COD为富营养化评价指标,分析廉州湾近岸海水理化要素测值的变化特征。结果表明,廉州湾内河口区海水富营养化程度分布较高,湾口区相对较低;水温季节变化不大,盐度春夏季低秋冬高,pH值季节变化不明显,COD夏季明显高于春季,活性硅酸盐冬季较低,DIN春季高于冬季,PO4-P春季大于冬季,廉州湾沿岸水质变化的主要原因与河口径流、沿岸河水、水产养殖排放物有关。
The DIN, PO4-P, COD were observed in the nearshore area in Liangzhou Bay from July 2003 to June 2004. The rich nutrition level is high in the Nanliujiang Estuary, and relatively lower in the mouth area. The water temperature and pH values did not change obviously with season change. Salinity was lower in spring and summer time, and higher in autumn and winter time. COD was higher in summer than in spring. DIN and PO4--P were higher in spring than in winter. The active silicate was lower in winter. These changes are linked to water current in the estuary,river nearby and wastes from aquiculture.
出处
《广西科学院学报》
2005年第3期151-154,共4页
Journal of Guangxi Academy of Sciences
基金
广西自然科学基金(0229011)资助项目。
关键词
海水
水质分析
富营养程度
变化特征
sea water, water quality analysis, rich nutrition level, changing characteristics
