2010-2011年胶州湾叶绿素<em>a</em>与环境因子的时空变化特征

王玉珏; 刘哲; 张永; 汪岷; 刘东艳

doi:10.3969/j.issn.0253-4193.2015.04.010

2010-2011年胶州湾叶绿素a与环境因子的时空变化特征

doi: 10.3969/j.issn.0253-4193.2015.04.010

1.
中国科学院烟台海岸带研究所海岸带环境过程与生态修复重点实验室, 山东烟台 264003
2.
中国海洋大学环境科学与工程学院, 山东青岛 266100
3.
中国海洋大学海洋生命学院, 山东青岛 266100

基金项目: 中国科学院先导专项 (XDA11020405);中国科学院科技创新交叉与合作团队;国家自然科学基金(41106101,41376121).

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出版历程
- 收稿日期: 2014-07-17
- 修回日期: 2014-12-24

Temporal and spatial variations of chlorophyll a and environmental factors in Jiaozhou Bay in 2010-2011

1.
Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
2.
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
3.
College of Marine Life Science, Ocean University of China, Qingdao 266100, China

摘要

摘要: 2010年4、6、8、10月和2011年1、3月在胶州湾开展了6个航次的综合调查,研究了表层海水温度、盐度、营养盐和叶绿素a浓度的时空变化特征.调查期间,总无机氮(DIN)、磷酸盐(PO₄)和硅酸盐(SiO₃)多呈现东北部湾边缘高,而湾内和湾口低的空间分布特征.季节变化表明,DIN和PO₄主要受养殖排放、河流径流输入和浮游植物生长消耗的影响,呈现初夏和秋季高,夏末和冬季低的特点;而SiO₃主要受河流径流输入和浮游植物消耗的影响,呈现夏、秋高,而冬、春低的特点.营养盐浓度和结构分析表明,胶州湾存在PO₄和SiO₃的绝对和相对限制;SiO₃限制尤其严重,是控制胶州湾浮游植物生长的主要环境因子.SiO₃和PO₄的限制主要表现在冬季,几乎遍布整个海湾;夏季降水可有效缓解海域的SiO₃限制.叶绿素a浓度呈现春、夏季高,秋、冬季低的季节分布,温度、营养盐浓度与结构和季节性贝类养殖活动是控制胶州湾叶绿素a浓度时空分布的关键因素.
- 胶州湾 /
- 叶绿素a /
- 营养盐 /
- 时空变化
Abstract: Temporal and spatial variations of surface seawater temperature (SST),salinity (SSS),nutrient concentrations and chlorophyll a concentrations were studied in April,June,August and October 2010 and January and March 2011 in Jiaozhou Bay. Spatial distributions showed that dissolved inorganic nitrogen (DIN),phosphate (PO₄) and silicate (SiO₃) concentrations were higher in the northeast edge and decreased gradually towards the inner and the mouth of Jiaozhou Bay during most time of study. DIN and PO₄ were relatively higher in early summer and autumn but lower in winter and late summer as a result of the effects from aquaculture,exogenous nutrients input and phytoplankton consumption. SiO₃ concentrations were mainly affected by phytoplankton consumption and river loadings and were higher in summer and autumn and lower in spring and winter. The analysis on concentrations and structures of nutrients of Jiaozhou Bay during the study period indicated that PO₄ and SiO₃ were both absolute and relative limitations,and SiO₃ limitation was more serious and acted as the important factor which controlled the growth of phytoplankton all over the year. The most serious limitation of SiO₃ and PO₄ occurred in winter and was found in the whole bay. The nutrient loadings as a result of rainfall in summer,however,relieved SiO₃ limitation. The chlorophyll a concentrations were higher in spring and summer and lower in autumn and winter. Temperature,nutrients and the ingestion of filter mussels were the dominant effect factors of the concentrations and distribution of chlorophyll a.
- Jiaozhou Bay /
- chlorophyll a /
- nutrients /
- temproal

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