东海赤潮高发区春季叶绿素a和初级生产力的分布特征

应用生态学报 ›› 2003, Vol. ›› Issue (7): 1055-1059.

东海赤潮高发区春季叶绿素a和初级生产力的分布特征

周伟华, 霍文毅, 袁翔城, 殷克东

中国科学院南海海洋研究所热带海洋环境动力学重点实验室, 广州 510301

收稿日期:2002-12-18 修回日期:2003-02-20 出版日期:2003-07-15
通讯作者: 殷克东
基金资助:
国家重点基础研究发展规划资助项目(2001CB409700);中国科学院知识创新工程资助项目(ZKCX2-SW-212);国家杰出青年科学基金资助项目(40125016).

Distribution features of chlorophyll a and primary productivity in high frequency area of red tide in East China Sea during Spring

ZHOU Weihua, HUO Wenyi, YUAN Xiangcheng, YIN Kedong

Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanonology, Chinese Academy of Sciences, Guangzhou 510301, China

Received:2002-12-18 Revised:2003-02-20 Online:2003-07-15

摘要/Abstract

摘要： 2002年4～5月对东海海域进行了综合调查,分析了海区叶绿素a和初级生产力的分布特性.结果表明,大面站表层平均叶绿素a浓度为1.086mg·m^-3.分级叶绿素a结果显示,春季东海浮游植物以微型和微微型(<20μm)占优势,其对海区叶绿素a的贡献为64%,超微型浮游植物(<5μm)占浮游植物生物量的27%.营养盐分布和浮游动物的摄食压力影响了叶绿素a及其粒级结构的分布.平均初级生产力为10.091mg·m^-3·h^-1,赤潮跟踪的R-03、RL-01、RG-01站的平均初级生产力为399.984mg·m^-3·h^-1.光和营养盐成为叶绿素和初级生产力平面分布的主要限制因子.表层叶绿素a和初级生产力均在调查海区的123°E纵断面冲淡区产生高值区.DC11站浮游植物生物量异常高,表层叶绿素a达到9.082mg·m^-3,初级生产力为128.79mg·m^-3·h^-1,但并未出现水色异常.

Abstract: The distributions of chlorophyll a and primary productivity were determined during April to May 2002 in the East China Sea. The results showed that the average concentration of chlorophyll a was 1.086 mg·m^-3 at surface layer,and that nano-and pico-phytoplankton (<20μm) dominated the phytoplankton biomass in this sea region during Spring (up to 64% of total chlorophyll a content). Ultra-phytoplankton (<5μm) consisted 27% of total phytoplankton biomass. Nutrients and feeding pressure of zooplankton affected the distribution of chlorophyll a and its size-fractionation. The average primary productivity was 10.091 mg·m^-3·h^-1,while that of red tide tracking stations R-03, RL-01 and RG-01 was 399.984 mg·m^-3·h^-1. Light and nutrients were the main factors affecting the distributions of chlorophyll a and primary productivity. The station DC-11 had a high concentration of phytoplankton biomass.The surface layer concentration of chlorophyll a and primary productivity were up to 9.082 mg·m^-3 and 128.79 mg·m^-3·h^-1, respectively,but the color of the seawater was normal.

中图分类号:

Q175.53

周伟华, 霍文毅, 袁翔城, 殷克东. 东海赤潮高发区春季叶绿素a和初级生产力的分布特征[J]. 应用生态学报, 2003, (7): 1055-1059.

ZHOU Weihua, HUO Wenyi, YUAN Xiangcheng, YIN Kedong . Distribution features of chlorophyll a and primary productivity in high frequency area of red tide in East China Sea during Spring[J]. Chinese Journal of Applied Ecology, 2003, (7): 1055-1059.

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