黄海鳀鱼产卵场和越冬场营养盐分布特征  

Distribution of nutrients on anchovy spawning ground and overwinterring ground in the Yellow Sea

作　　者：孙珊[1] 刘素美[1] 任景玲[1] 张桂玲[1] 程岩[1] 谢亮[1] 高磊[2] 

机构地区：[1]中国海洋大学化学化工学院,山东青岛266100 [2]华东师范大学河口海岸国家重点实验室,上海200062

出　　处：《海洋科学》2008年第10期45-50,共6页Marine Sciences

基　　金：国家重点基础研究发展规划项目(2006CB4006601);新世纪优秀人才支持计划项目(NCET-05-0593)

摘　　要：通过2002年11月、2003年1月和2004年6～7月的营养盐资料,讨论了黄海鳀鱼(Engraulis japoni- cus)产卵场和越冬场营养盐在秋、冬、夏三个季节分布变化特征。分析结果表明:黄海鳀鱼产卵场和越冬场表层营养盐随季节变化明显。秋季,营养盐在调查海区的南部出现最高值,向北递减,在朝鲜半岛沿岸浓度也较高;冬季,营养盐分布高值区出现在南黄海中部及朝鲜半岛西南近岸,表底层分布大致相同;夏季,在鳀鱼产卵场近岸形成了营养盐的高值区。在调查海域表层,PO_4^(3-)和SiO_3^(2-)分布冬季最高,秋季最低;DIN冬季最低,秋季最高。在底层,PO_4^(3-)、SiO_3^(2-)和DIN均是秋季最高,PO_4^(3-)和DIN冬季高于夏季,而SiO_3^(2-)则是夏季较高。对比了N/P,Si/N值,三个季节N/P值都大于Redfield值,尤其是夏季(>50).Si/N值也略小于Redfield值。黄海鳀鱼产卵/越冬场浮游植物光合作用受N限制的可能性极小,绝大部分水域主要是受P限制,Si的含量普遍较高,它不可能成为限制因子。The distribution features of nutrients on anchovy spawning ground and overwinterring ground in the Yellow Sea are discussed based on the data collected in November 2002, January 2003, June and July 2004. The results show that the seasonal variation of nutrients is obvious. There are abundant nutrients in the area of the south of the Yellow Sea and the coast of the Korean Peninsula in autumn; while the summit value of nutrients appears in the middle of the Yellow Sea and southwest coast of the Korean Peninsula in winter. And the high value of nutrients is near the anchovy spawning ground in summer. On surface layer of the investigated area, the concentrations of PO4^3- and SiO3^2- appear maximal values in winter, while the minimal values appear in autumn; the distribution of DIN behaves reversely. The concentrations of PO4^3- , SiO3^2- and DIN come to maximal values in autumn on bottom layer of the investigated area. Based on the Red- field ratio （Si N P=16 ： 16 ： 1）, N/P ratios are higher than Redfield in three seasons, especially in summer. And Si/N ratios are relative smaller than Redfield. P, rather than N, might be the limiting factor for the growth of phytoplankton on anchovy spawning ground, while the value of Si is relative high not to be a limiting factor.

关 键 词：营养盐 鲤鱼(Engraulis japonicus)产卵场 鳃鱼越冬场 黄海 

分 类 号：S912[农业科学—水产科学]