摘要
本文调查研究了海南三亚近岸海域水化学要素的浓度和分布，结果表明：（１）表层ＤＯ、ＮＯ－２、ＮＯ－３、ＮＨ＋４、ＰＯ３－４和ＣＯＤ的平均浓度分别为４１１．９、０．０５、０．４７、１．７９、０．１６μｍｏｌ／ｄｍ３和１．３１ｍｇ／Ｌ。（２）河流输入对沿岸海域水化学要素的影响主要集中于ＮＨ＋４和ＣＯＤ，对ＰＯ３－４和ＮＯ－３的浓度影响不明显，海域总体为一贫营养盐区域。采用主成分分析表明控制水化学要素的主要因子是河流的输入和由此导致了的生物旺发。
The distribution characteristics and change law of the key elements in the coastal water of Sanya Bay,Hainan have been investigated.The results showed that (1) in the surface water,the average concentrations of DO,NO_2^- , NO_3^-, NH_4^+, PO_4~3- and COD were 411.9,0.05,0.47,1.79,016 μmol/dm3 and 131 mg/L,respectively;(2) the effects of the river on the behavior of NH_4^+ and COD were limited and the river input had little influence on NO_3^- and PO_4~3-.The coastal water is still oligotropical.Principal Component Analysis (PCA) showed that major factors controling the concentrations and distributions of the key elements in the sea water was the river input and its induced bloom.
出处
《海洋环境科学》
CAS
CSCD
北大核心
1998年第2期58-62,共5页
Marine Environmental Science
基金
香港科技大学研究中心
国家海洋局第二海洋研究所合作项目
关键词
海水化学
分布特征
变化规律
化学要素
seawater chemistry
key element
distribution characteristic
change law
