摘要
在2000年8月和2001年1月对渤海进行的两个航次的调查取样的基础上,分析渤海营养盐和叶绿素a的分布特征,各海区营养盐的结构以及营养盐和叶绿素a的关系。结果表明,冬季营养盐的浓度高于夏季,硅酸盐有明显的垂向结构,40多年来渤海中部硝酸盐呈现增加趋势;莱州湾浮游植物生长处于磷限制,其它海区处于氮限制;冬季叶绿素a的浓度也高于夏季,叶绿素a的季节差异可能与夏季浮游动物对浮游植物的大量摄食有关。
On the basis of samplings from two cruises carried on in the Bohai Sea during August, 2000 and January, 2001, characteristics of nutrients and chlorophyll a distribution were analyzed. Nutrients structure of the sea area and the relationship between nutrients and chlorophyll a in vestigated.Results show the following: (a) during winter, concentrations of nitrogen are higher than those in summer. (b) Silicate was shown to have a vertical structure. (c) Nitrate levels have increased during the past over forty years in the central Bohai Sea. (d) Phytoplankton growth in Laizhou Bay was subject to phosphate limition, while in other sea area it is subject to nitrogen limiting. (e) Concentration of chlorophyll a during winter was also higher than in summer, may be related to zooplankton mass-grazing on the phytoplankton in the summer.
出处
《海洋科学》
CAS
CSCD
北大核心
2004年第4期34-39,共6页
Marine Sciences
基金
国家重点基础研究发展规划项目"渤海环流及其变异对环境容量及质量的影响"(G1999043812)
国家高技术研究发展计划"模块化多源海洋遥感信息融合与同化技术"(2001AA633030)
