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  

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

作　　者：余果 钟雅枫 付东洋 陈法锦[3] 刘大召 徐华兵 刘贝 Yu Guo;Zhong Yafeng;Fu Dongyang;Chen Fajin;Liu Dazhao;Xu Huabing;Liu Bei(College of Electronic and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,China;College of Chemistry and Environment,Guangdong Ocean University,Zhanjiang 524088,China;College of Oceanography and Meteorology,Guangdong Ocean University,Zhanjiang 524088,China;Marine Resources Big Data Center of South China Sea,Southern Marine Science and En-gineering Guangdong Laboratory(Zhanjiang),Zhanjiang 524025,China)

机构地区：[1]广东海洋大学电子与信息工程学院,广东湛江524088 [2]广东海洋大学化学与环境学院,广东湛江524088 [3]广东海洋大学海洋与气象学院,广东湛江524088 [4]南方海洋科学与工程广东省实验室(湛江)南海资源大数据中心,广东湛江524025

出　　处：《海洋学报》2022年第8期31-41,共11页

基　　金：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)。

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,K_(d)(PAR)与浊度存在显著的正相关关系,建立的线性回归模型R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/(m^(2)·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。The temporal and spatial variation characteristics and influencing factors of euphotic depth and primary productivity in the Zhanjiang Bay were studied by applying voyage data of four seasons from 2016 to 2017.The results showed that the average value of euphotic depth was(6.95±3.17)m,and the spatial variations were more obvious than the seasonal variations.There was a significant positive correlation between K_(d)(PAR)and turbidity,as the R^(2)of established linear regression model was 0.73(p<0.01),indicating that suspended particles on euphotic depth was the dominant attenuation factor in the Zhanjiang Bay.The average value of primary productivity obtained by VGPM model was(639.53±427.95)mg/(m^(2)·d),and its temporal and spatial characteristics were basically consistent with euphotic depth,which mean euphotic depth explained the temporal and spatial distribution pattern of primary productivity better than chlorophyll a concentration.

关 键 词：真光层深度 初级生产力 Kd(PAR) 浊度 VGPM 湛江湾 

分 类 号：P714.4[天文地球—海洋科学] P76