摘要
台湾海峡海域1983－1988年多次调查资料表明，该海域夏季表现耗氧量（AOU）变化幅度较大，其分布特征呈近岸、底层高，向上层、外海递减，诸上升流是其主要控制因素。各上升流区AOU与温度、盐度、诸营养盐呈显著相关关系。PO4／AOU与NO3／AOU比值平均分别为0.0058和0.076。上升流海域夏季初始营养盐[PO4,pre和[NO3,pre较低，而再生营养盐高，是现场营养盐的主要部分。有机物质分解耗氧对AOU的贡献比浮游动物等呼吸耗氧更重要。
Taiwan Strait oceanographic survey data (temperature, sality, dissolvedoxgen and nurients of NO3, PO4, SiO3 were measured at site) obtained in 1983 to1988 showed that apparent oxygen utilization (AOU, calculated by based on survey data at site) in the whole Taiwan Strait was relatively low in winterand had more changC in stunmer. The nearshore and bottom waters were characterizedby relatively high and more changing AOU with distributions decreasing upward andoffshoreward. There was a close layer of large vertical changes of AOU in the localupper water of the off shore areas. Upwellings controlled the characteristics of AOUdistribution in the areas in summer. Sighficant correlations between AOU andtemperature, salinity, nutrients [PO4,, and [NO3,, respectively, were found in theupwelling areas.The averops of PO4/AOU and NO3 /AOU ratios in the areas were respectively0.0058 and 0.076, and smaller than the Redfield ratio. There were the relatively lowpreformed nutrients concelltrations, but the high concentrations of field and regene-rated nutrients in the nearshore and bottom water areas. The regenerated nutrieatscomPrised a major part of the field nutrients in the upwelling areas in summer.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1996年第3期287-295,共9页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金!4860241
关键词
表观耗氧量
营养盐
近岸
上升流
台湾海峡
Apparent oxygen utilization Preformed nutrients Nearshore upper water Taiwan Strait
