摘要
根据2007～2008年春、夏、秋、冬8个航次的调查数据,对闽江口海域N、P营养盐分布状况与富营养化特征进行了研究.其结果表明,受闽江冲淡水影响,海水中的N、P营养盐含量的平面分布呈现近岸高而向外逐渐降低的趋势.在N、P营养盐中,PO4-P含量呈现较为明显的季节性变化,而DIN含量的季节性变化规律却不明显.在春、夏、秋、冬四季中NO3-N/DIN含量的比值分别高达79.60%、79.13%、90.54%、96.14%,主导该海域DIN含量的平面分布和污染程度.闽江口海域海水中DIN、PO4-P含量呈不同程度的超标状态,富营养化指数为0.17～41.73,N/P原子比均值为41.14,远远偏离Redfield值(16:1),具有磷限制潜在性富营养化特征.
Based on data from seasonal surveys in 2007 and 2008, the nitrogen and phosphate distribution and the eutrophication of Minjiang Estuary are studied. It shows that N and P values in the seawater were higher alongshore and decreased gradually outward due to mostly the impact of freshwater from Minjiang River. Among them PO4-P varied much in 4 seasons in contrast to DIN which showed less variation. NO3-N ratios were as high as 79.60%, 79.13% ,90.54% ,96.14% in all year, dominating the horizontal distribution of DIN and the state of pollution in the estuary. DIN and PO4-P contents have surpassed standard of the water quality of China with eutrophication index of 0. 17 -41.73. The average of N/P （molar ratio） was 41.14 ,which are higher than that of Redfleld value （ 16： 1 ） characteristic of P limit as potential eutrophication.
出处
《台湾海峡》
CAS
CSCD
北大核心
2010年第1期42-46,共5页
Journal of Oceanography In Taiwan Strait
关键词
海洋化学
营养盐
潜在性富营养化
闽江口海域
marine chemistry
nutrients
potential eutrophication
Minjiang Estuary
