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胶州湾营养盐的现状和变化
引用本文:沈志良.胶州湾营养盐的现状和变化[J].海洋科学,1997,21(1):60-64.
作者姓名:沈志良
作者单位:中国科学院海洋研究所
基金项目:中国科学院重大项目资助!KY85 - 0 8- 0 1
摘    要:报道了1991年5月至1994年2月12个航次胶州湾NO3-N,NO2-N,NH4-N,PO4-P和SiO3-Si的时空分布基本特征,60年代于至90年代的变化表明,胶州湾营养盐的浓度和分布已发生显变化。尤其从60年代至80年代,30年来,胶州湾中东部水城PO4-P,NO3-N和NH4-N浓度分别增加2.2,7.3和7.1倍,TON浓度也增加了3.5倍,TIN/PO4-P从10增加至24.2;T

关 键 词:胶州湾  营养盐  分布  变化  环境保护
收稿时间:1995/7/11 0:00:00

THE PRESENT AND VARIATIONS OF NUTRIENTS IN JIAOZHOU BAY
Shen Zhiliang.THE PRESENT AND VARIATIONS OF NUTRIENTS IN JIAOZHOU BAY[J].Marine Sciences,1997,21(1):60-64.
Authors:Shen Zhiliang
Abstract:The space time distributions of NO 3 N, NO 2 N, NH 4 N, PO 4 P and SiO 3 Si in Jiaozhou Bay from May 1991 to February 1994 ( 12 times investigations) are discussed in this paper. The horizontal distributions of nutrients showed high concentrations of them in northern, north eastern and eastern waters and low concentrations in southern and south western. The concentrations of nutrients were much higher inside bay than outside bay. The seasonal variations of nutrients similar to Chla showed some different laws every year. High atomic ratio between total inorganic N and PO 4 P(seasonal average, 28) and low between NO 3 N and PO 4 P(seasonal average, 4.6) showed that phytoplankton growth mainly was limited by PO 4 P and NH 4 N was the main form of inorganic N in the seawater. From the 1960s to the 1990s, the distributions of nutrients in Jiaozhou Bay have had greater variations particularly from the 1960s to the 1980s. In 30 years, their concentrations in eastern and the middle waters have increased 2.2 times for PO 4 P, 7.3 times for NO 3 N, 7.1 times for NH 4 N and 3.5 times for total organic N. The atomic ratio between total inorganic N and PO 4 P and the ratio between total inorganic N and total N increaced from 10 to 24.2 and from 3.7% to 6.3% respectively. But the ratio between NH 4 N and total inorganic N keeps the leval of 78 79%. A great deal of increase of nutrients in Jiaozhou Bay is the direct result of humen influence.
Keywords:Jiaozhou Bay  Nutrients distributions  Variations in 30  years Invironment protection  
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