首页 | 本学科首页   官方微博 | 高级检索  
     检索      

胶州湾叶绿素的浓度、分布特征及其周年变化
引用本文:李超伦,张芳,申欣,杨波,沈志良,孙松.胶州湾叶绿素的浓度、分布特征及其周年变化[J].海洋与湖沼,2005,36(6):499-506.
作者姓名:李超伦  张芳  申欣  杨波  沈志良  孙松
作者单位:中国科学院海洋研究所海洋生态与环境科学重点实验室,青岛,266071
基金项目:中国科学院野外台站网络基金项目(胶州湾),2005-2008;中国科学院知识创新项目,KZCX3-SW-214号.
摘    要:2003年6月-2004年5月对胶州湾及邻近海域水体中叶绿素a浓度变化及其空间分布进行了周年调查.结果表明,调查海域叶绿素a全年平均浓度为2.81mg/m^3,月平均浓度变化范围为0.73-8.44 mg/m^3.整个海域叶绿素a浓度周年变化呈现双峰型,分别在夏季8月和冬季2月出现两个高峰,但是不同区域的变化幅度不同,其水平分布格局为湾内高于湾外,湾内北部高于南部.营养盐浓度变化与叶绿素a浓度的变动未发现明显的相关性,但是在局部海域硅酸盐对冬季浮游植物水华的进一步发展具有一定的限制作用.综合分析营养盐、叶绿素a和浮游动物的周年变化及其之间的关系显示,下行控制(Top-down control)在胶州湾浮游植物的数量变动中起着重要的调控作用.

关 键 词:叶绿素a  浓度  分布  周年变化  胶州湾
收稿时间:2005-04-22
修稿时间:2005-06-30

CONCENTRATION,DISTRIBUTION AND ANNUAL FLUCTUATION OF CHLOROPHYLL-a IN THE JIAOZHOU BAY
LI Chao-Lun,ZHANG Fang,SHEN Xin,YANG Bo,SHEN Zhi-Liang and SUN Song.CONCENTRATION,DISTRIBUTION AND ANNUAL FLUCTUATION OF CHLOROPHYLL-a IN THE JIAOZHOU BAY[J].Oceanologia Et Limnologia Sinica,2005,36(6):499-506.
Authors:LI Chao-Lun  ZHANG Fang  SHEN Xin  YANG Bo  SHEN Zhi-Liang and SUN Song
Institution:Key laboratory of Marine Ecology and Environnvental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071
Abstract:The Jiaozhou Bay is a typical temperate bay that provided with harbor,traveling,mariculture,etc.During the past decades,aquaculture,sea farming and changes in inputs of freshwater,nutrients and sediments have resulted in changes in structure and function of the marine ecosystem.In order to improve our understanding of the marine ecosystem of this area,the concentrations and distributions of chlorophyll-a were investigated monthly during June 2003 to May 2004 in the Jiaozhou Bay and its adjacent area.The results showed that the annual average concentration of chlorophyll-a was 2.81mg/m~(3) and the monthly mean concentrations ranged between 0.73 to 8.44 mg/m~3 in the study area.The concentrations of chlorophyll-a exhibited two-peaks during the study period.Phytoplankton reached annual highest concentrations in February,and then decreasing gradually.From May,the concentrations of chlorophyll-a increasing again with the water temperature increasing,and reached their second peak is in August,but the values were only half of those in February.The seasonal changes of chlorophylla are larger in the northern shallow area than those in the southern and out of the bay.The highest value occurred in February(monthly average concentration was 15.52mg/m~3) was nearly 30 times higher than that in December(0.55mg/m~3) in the north of bay.The horizontal distribution patterns showed that the concentrations decreased from northern to southern in the Jiaozhou Bay,and higher inside than out of the bay.Comparing the chlorophyll-a concentration with nitrate,ammonium,phosphate and silicate,there was no obvious correlation between them,although nutrient salts present a similar distribution pattern as that of chlorophyll-a.Only the generally decline of the nutrients with phytoplankton increasing indicates that the phytoplankton growth has an important impact on the change of nutrients.The concentrations of silicates declined to nearly 0 when the phytoplankton blooming occurred in winter.On the other side,the following decline of phytoplankton biomass also suggested that the low silicate limited the further developing of the winter phytoplankton bloom.The fluctuation of zooplankton biomass is generally synchronous to that of phytoplankton in the study area,and the only exception is that zooplankton biomass still keep at a low level while phytoplankton increase in the northern area in summer.The culture of Ruditapes philippinarum increased dramatically in the Jiaozhou Bay during last decade.Although our survey area outside the shallow,dense culture area,the distribution of high concentrations of chlorophyll-a shifted from northeast of the bay(mainly culture area of Ruditapes philippinarum) to the west area during this shellfish fast growth season,which indicated the influence of human activity on the nature ecosystems.Analysis on the variations of the nutrient salt,chlorophyll-a,and zooplankton,top-down control mechanism play an important role on regulating the fluctuation.
Keywords:Chlorophyll- a  Concentration  Distribution  Annual fluctuation  The Jiaozhou Bay
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《海洋与湖沼》浏览原始摘要信息
点击此处可从《海洋与湖沼》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号