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夏季黄渤海海水碳酸盐体系研究

发布时间:2021-02-03 17:32
  陆架边缘海在全球碳循环中起着重要作用。黄海和渤海是我国典型的半封闭陆架浅海,受长江口和黄河口的影响显著。由于近岸水体水动力条件复杂且观测点时空覆盖范围有限,目前对黄渤海海水碳酸盐体系的研究仍较为缺乏。已有的研究成果主要集中在表层水中,对海水碳酸盐体系整体特征的认识并不全面,且大部分研究缺少对该海域碳酸盐体系影响因素尤其是水动力条件和不同水团驱动作用的讨论。鉴于此,本研究通过对该海域进行现场观测,全面分析了夏季黄渤海碳酸盐体系的特征并讨论了其控制机制。本研究分别于2015年8月17日至9月6日和2016年6月28日至7月21日对黄渤海海水碳酸盐体系开展航次调查,采集了碳酸盐体系参数pH、总碱度(AT)和温度(T)、盐度(S)、营养盐(N03、P、Si)、叶绿素(Ch1a)等辅助参数的数据。由于2015年航次仅采集了海水pH样品,本研究中海水碳酸盐体系空间分布特征主要使用2016年航次的数据进行分析。为便于研究其分布特征及影响因素,首先根据海水的温盐性质将研究区域水体分为六个水团,分别是长江冲淡水(CDW)、黄海沿岸流(YSCoW)、黄海表层暖水(YSWW)、黄海冷水团(YSCW)、渤海中... 

【文章来源】:华东师范大学上海市 211工程院校 985工程院校 教育部直属院校

【文章页数】:104 页

【学位级别】:硕士

【文章目录】:
摘要
Abstract
Ch.1 Introduction
    1.1 Research background
        1.1.1 Global climate change and carbon dioxide
        1.1.2 Challenges and opportunities under climate change
    1.2 Research progress in marine carbon
        1.2.1 Achievements in global open seas
        1.2.2 Research progress in marginal shelf seas
        1.2.3 Ocean acidification and its influences on marine ecosystem
    1.3 Carbonate system in seawater
    1.4 Significance and content of the study
Ch.2 Materials and methods
    2.1 Study area
    2.2 Sampling strategies and analytical procedures
        2.2.1 pH and alkalinity
        2.2.2 Other field variables
    2.3 Calculation of other carbonate variables
    2.4 Experiment designed on preservation of pH samples
Ch.3 Carbonate system characteristics in the Yellow Sea and BohaiSea
    3.1 Classification of water types
    3.2 Distribution of all measured variables
        3.2.1 Distributions of carbonate and hydrological variables
        3.2.2 Distributions of nutrients and chlorophyll a
    3.3 Carbonate and hydrochemical characteristics in special transects
        3.3.1 Vertical distribution of carbonate variables
        3.3.2 Vertical distribution of hydrochemical variables
    3.4 Results of the experiment on paralleled pH samples
    3.5 Summary
Ch.4 Controlling factors of the carbonate system
    4.1 Relationships between carbonate variables and environmentalfactors
    4.2 Carbonate variables in different water types and the influences ofwater mixing
T versus salinity">        4.2.1 AT versus salinity
        4.2.2 pH versus salinity
    4.3 The biological activity and its influence on carbonate system
    4.4 Characteristics of nutrients and the connection with carbonatechemistry
    4.5 Influences of other processes
    4.6 Summary
Ch.5 Temporal variation of carbonate system and its potential threats
    5.1 The distribution of pH and hydrological variables in Aug 2015
    5.2 Comparison between pH in two cruises
    5.3 Temporal variation of carbonate system in the surveying area
    5.4 Variation trend in the future and potential threats
    5.5 Summary
Ch.6 Conclusions and prospects
    6.1 Conclusions of this study
    6.2 Innovations
    6.3 Problems under disputing and the prospect
结论和展望
References
Appendix
Acknowledgements
Research activities during the study period


【参考文献】:
期刊论文
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[2]海洋酸化正负效应:藻类的生理学响应[J]. 高坤山.  厦门大学学报(自然科学版). 2011(02)
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[4]带生物泵三维全球海洋碳循环模式[J]. 邢如楠.  大气科学. 2000(03)



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