高位池养殖尾水排放对海滩沉积物粒形分布的影响研究  

Study on the influence of high-level pond aquaculture effluent discharge on the particle shape distribution of beach sediments

作　　者：李高聪 袁明明 廖健[2] 祁雅莉 唐杰平 夏琼 LI Gaocong;YUAN Mingming;LIAO Jian;QI Yali;TANG Jieping;XIA Qiong(College of Electronic and Information Engineering,Guangdong Ocean University,Zhanjiang,Guangdong 524088,China;College of Fisheries,Guangdong Ocean University,Zhanjiang,Guangdong 524088,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]广东海洋大学水产学院,广东湛江524088

出　　处：《华东师范大学学报(自然科学版)》2025年第2期97-105,共9页Journal of East China Normal University(Natural Science)

基　　金：广东省基础与应用基础研究基金(2022A1515240023);广东海洋大学科研启动经费(060302112304,060302112312,060302112104);广东海洋大学“恒立生科卓越科研项目”重点项目(B23335-1)。

摘　　要：高位池养殖尾水直排海滩后滨是华南海岸较为普遍的人类活动,探究此类活动对海滩沉积物信息分布格局的影响机理对于提升海岸带资源的可持续利用具有重要意义.基于表层沉积物5种粒形参数的特征值、空间变化特征、粒形参数之间的相关性,探讨了湛江东海岛中部高位池影响岸滩和未影响岸滩粒形参数分布信息的异同及其原因.结果表明:①两类岸滩粒形参数平均值的特征值较为接近;②两类岸滩的宽长比、圆度和凸度的空间变化趋势存在一定差异,而对称度和球度的空间变化趋势一致;③两类岸滩的粒形参数之间、粒形参数与粒度参数之间的拟合方程主要呈相关性不显著关系.高位池养殖尾水的排放过程及其产物冲沟地形改变了海滩剖面的流场和物质分配过程,是两类岸滩粒形参数存在差异的主要原因.提供了一个高位池养殖活动如何影响海滩沉积物粒形信息分布特征的研究案例,成果有助于提升对海水养殖活动与砂质岸滩地貌过程相互作用机理方面的认识.The direct discharge of high-level pond aquaculture effluent onto beaches is a common human activity along the South China coast.Investigating the mechanisms by which such activities affect the distribution patterns of beach sediment information is crucial for the sustainable utilization of coastal resources.This study explored the similarities and differences in the distribution of particle shape parameters between the beach influenced by high-level pond aquaculture and the unaffected beach,along with the reasons behind them,using characteristic values,spatial variation characteristics,and correlations among five particle shape parameters of surface sediments.The results show that:①the characteristic values of the average particle shape parameters of the two types of beaches are relatively close;②presence of certain differences in the spatial variation trends of aspect ratio,circularity,and convexity between the two types of beaches,amidst consistent spatial variation trends of symmetry and sphericity;and③the relationships between particle shape parameters and between particle shape parameters and grain size parameters in the two types of beaches were not significantly correlated.The discharge process of high-level pond aquaculture effluent and the resulting changes in gully topography alter the flow field and material distribution process of beach profiles,the primary reasons for the differences in particle shape parameters between the two types of beaches.This study provides a case study on how high-level pond aquaculture activities affect the distribution characteristics of beach sediment particle shape information.The findings contribute to a better understanding of the interaction mechanisms between marine aquaculture activities and sandy beach geomorphological processes.

关 键 词：海滩表层沉积物 粒形参数 高位池尾水排放 湛江东海岛 

分 类 号：P736.213[天文地球—海洋地质]