【摘要】 本文根据2003~2006年厦门湾水质调查资料,研究了水体中化学耗氧量(COD)、溶解态无机氮(D IN)和磷酸盐(PO43--P)的含量分布及该海域富营养化程度的变化趋势.结果表明,近4a来,厦门湾COD平均含量呈现下降趋势;而水体的D IN和PO43--P平均含量呈增加趋势.厦门湾水体中平均N/P大于16,主要表现为磷限制特征,而马銮湾海区则表现为"丰磷"状态.厦门湾水体富营养化指数由1.1增加至5.4,增加趋势明显.更多还原

【Abstract】 The distributions of COD,DIN,PO43——P and the developing trend of seawater eutrophication in Xiamen bay were studied based on the water quality data obtained from 2003 to 2006.The results show that in recent 4 years the average contents of COD decreased progressively,while the average contents of DIN and PO43——P increased.The average N/P ratio is bigger than 16 and hence the phytoplankton growth is P limited in Xiamen bay except for Maluan bay,where waters was N limited.The average eutrophication index increased from 1.1 to 5.4 in recent 4 years,which suggests that the eutrophication level in the bay had raised significantly.更多还原