摘要
于2012年5月至2013年2月期间在灌河口北部海域取样,分析讨论了灌河口北部海域营养盐含量的时空变化及其影响因素、海域的富营养化水平和营养级类型。结果表明,整个调查期间,无机磷的含量相对较低,高N/P值显示磷可能成为该研究海域浮游植物生长的限制因子。调查海域近岸及附近海域营养指数E值大于1,处于富营养状态。营养级评价结果显示海域四个季节大多数站位处于磷中等限制潜在性富营养状态。无机氮含量较高,灌河口附近海域普遍超过第四类海水水质标准,其中夏秋季高于春冬季,是由于夏秋季陆源输送增大所致。
According to the survey data for waters near the northern Guanhe estuary from May 2012 to February 2013,the concentrations of the nutrient and their plane and temporal distribution and the trophic level types were known.It was found that the inorganic phosphorus content was low,the inorganic nitrogen nutrient content was high relatively.And the high N/P ratios illustrated phosphorus might become the limited factor for phytoplankton growth.The waters had a trophic index（E）above1,which indicated the sea inshore and the adjacent waters was in eutrophication.Eutrophication level evaluation results showed research stations were mostly in moderate potential phosphorus limitations.And the water quality was generally worse than the grade IV,it was higher in summer and fall than that in other seasons which might caused by the more terrestrial transport.
出处
《海洋湖沼通报》
CSCD
北大核心
2015年第1期155-161,共7页
Transactions of Oceanology and Limnology
基金
国家海洋局东海分局开放基金(MATHAB20120211)资助
关键词
灌河口
营养盐
富营养化
氮磷比值
Guanhe estuary
nutrient
eutrophication
N/P ratio
