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湛江湾真光层深度与初级生产力的时空变化及其影响因素

余果 钟雅枫 付东洋 陈法锦 刘大召 徐华兵 刘贝

余果,钟雅枫,付东洋,等. 湛江湾真光层深度与初级生产力的时空变化及其影响因素[J]. 海洋学报,2022,44(9):1–11 doi: 10.12284/hyxb2022136
引用本文: 余果,钟雅枫,付东洋,等. 湛江湾真光层深度与初级生产力的时空变化及其影响因素[J]. 海洋学报,2022,44(9):1–11 doi: 10.12284/hyxb2022136
Yu Guo,Zhong Yafeng,Fu Dongyang, et al. Spatiotemporal variations and influencing factors of euphotic depth and primary productivity in Zhanjiang Bay[J]. Haiyang Xuebao,2022, 44(9):1–11 doi: 10.12284/hyxb2022136
Citation: Yu Guo,Zhong Yafeng,Fu Dongyang, et al. Spatiotemporal variations and influencing factors of euphotic depth and primary productivity in Zhanjiang Bay[J]. Haiyang Xuebao,2022, 44(9):1–11 doi: 10.12284/hyxb2022136

湛江湾真光层深度与初级生产力的时空变化及其影响因素

doi: 10.12284/hyxb2022136
基金项目: 国家自然科学基金青年科学基金(42106148);广东省教育厅重点研究项目(2019KZDXM019);广东省教育厅青年创新人才项目(2021KQNCX028);南方海洋科学与工程广东省实验室(湛江)资助项目(ZJW-2019-08)。
详细信息
    作者简介:

    余果(1993-),男,安徽省安庆市人,研究方向为海洋水色遥感。E-mail:yg100@gdou.edu.cn

    通讯作者:

    钟雅枫,在读博士,主要从事海洋生态环境研究。E-mail:780273465@qq.com

    徐华兵,讲师,博士,研究方向为环境科学。E-mail:xuhuabing1990@163.com

  • 中图分类号: P76

Spatiotemporal variations and influencing factors of euphotic depth and primary productivity in Zhanjiang Bay

  • 摘要: 基于2016−2017年4个季节航次数据,分析了湛江湾真光层深度与初级生产力的时空变化特征及其影响因素。结果表明,湛江湾真光层深度平均值为(6.95±3.17)m,空间变化比季节变化明显,Kd(PAR)与浊度存在显著的正相关关系,建立的线性回归模型R2为0.73(p<0.01),表明悬浮颗粒物对湛江湾真光层深度的影响占主导地位。利用VGPM模型得到初级生产力(以碳计)的平均值为(639.53±427.95)mg/(m2·d),其时空特征与真光层深度基本保持一致,真光层深度比叶绿素a浓度更能解释初级生产力的时空分布模式。
  • 图  1  湛江湾采样站位

    ◇(Z1−Z24)为春季和夏季采样站位;▽(S1−S21)为秋季采样站位;△(A1−A26)为冬季采样站位

    Fig.  1  Sampling sites in Zhanjiang Bay

    ◇(Z1−Z24) denotes the sampling site in spring and summer; ▽(S1−S21) denotes the sampling site in autumn; △(A1−A26) denotes the sampling site in winter

    图  2  湛江湾真光层深度的季节和空间分布

    Fig.  2  Seasonal and spatial distributions of euphotic depth in Zhanjiang Bay

    图  3  基于VGPM模型的湛江湾初级生产力的季节和空间分布

    Fig.  3  Seasonal and spatial distributions of primary productivity in Zhanjiang Bay based on VGPM model

    图  4  PAR漫衰减系数(Kd)与浊度(a)、叶绿素a浓度(b)和CDOM吸收系数(c)建立的回归模型

    Kd(PAR)单位:m−1;浊度单位:NTU;叶绿素a浓度单位:μg/L;CDOM吸收系数单位:m−1

    Fig.  4  Regression models between photosynthetically available radiation attenuation coefficients (Kd (PAR) and turbidity(a), Chl a concentration(b) and CDOM absorption coefficient(c)

    Kd(PAR) Uint: m−1; turbidity Uint: NTU; Chl a concentration Uint: μg/L; CDOM absorption coefficient Uint: m−1

    图  5  湛江湾表层叶绿素a浓度的季节和空间分布

    Fig.  5  Seasonal and spatial distributions of surface Chl a concentration in Zhanjiang Bay

    图  6  4个季节各有效站位表层营养盐浓度

    Fig.  6  Surface nutrient concentration of each effective station in four seasons

    图  7  4个季节各有效站位N、P、Si含量之间的比值

    Fig.  7  Ratio of N, P and Si contents at each effective station in four seasons

    表  1  湛江湾Kd(PAR) 和Zeu的季节性变化

    Tab.  1  Seasonal variations of Kd(PAR) and Zeu in Zhanjiang Bay

    调查期间(n=62)Kd(PAR)/m−1Zeu/m
    春季(n=19)平均值0.79±0.447.05±3.27
    范围0.24~2.182.11~16.00
    夏季(n=13)平均值0.91±0.275.23±1.98
    范围0.49~1.483~9.32
    秋季(n=11)平均值0.91±0.335.50±1.67
    范围0.50~1.742.65~9.13
    冬季(n=19)平均值0.53±0.228.62±3.74
    范围0.29~1.062.8~15.5
    总计平均值0.76±0.366.95±3.17
    范围0.24~2.182.11~16.00
    下载: 导出CSV

    表  2  初级生产力与不同季节真光层深度、叶绿素a浓度之间的相关系数r(样本数=62)

    Tab.  2  Value of correlation coefficient r between primary productivity and euphotic depth and Chl a concentration during different seasons (sample number=62)

    参数春季夏季秋季冬季全年
    Zeu0.917**0.726**0.944**0.968**0.903**
    Chl a浓度0.854**0.8**0.779**0.150.519**
    注:**代表p<0.01。
    下载: 导出CSV

    表  3  初级生产力与不同季节可溶性机氮(DIN)、$ {{\rm {PO}}_4^{3-}} $$ {{\rm {SiO}}_3^{2-}} $浓度之间的相关系数r(样本数=60)

    Tab.  3  Value of correlation coefficient r between primary productivity and DIN、$ {{\rm {PO}}_4^{3-}} $ and $ {{\rm {SiO}}_3^{2-}} $ concentration during different seasons (sample number=60)

    参数春季夏季秋季冬季全年
    DIN浓度0.841**0.836**0.905**0.4190.668**
    PO43−浓度0.721**0.727**0.515 0.18 0.226
    SiO32−浓度0.847**0.758**0.751**0.2120.553**
    注:**代表p<0.01。
    下载: 导出CSV
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  • 收稿日期:  2021-08-28
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