海洋地质前沿2025，Vol.41Issue(7)：12-20,9.DOI:10.16028/j.1009-2722.2024.280
江苏海门蛎岈山牡蛎礁沉积环境特征与评价
Sedimentary environment and evaluation of oyster reef in Liyashan,Haimen,Jiangsu Province
摘要
Abstract
To understand the sedimentation and environmental characteristics in oyster reefs in Liyashan,Hai-men,Jiangsu,vertical column sampling of sediments was carried out in 2023,from which the grain size statistical analysis,and 210Pb and 137Cs dating of sediments were conducted.Results indicate that the substrate of the oyster reef consists of sandy silt and silt.The 210Pb activity and excess 210Pbex activity in core C01 exhibit a similar trend,characterized by a"decay layer-background layer"dual structure.In contrast,core C02 displays a"mixing layer-background layer"dual structure;the top 0-70 cm is the mixing layer,showing fluctuations in the activities,while below 70 cm,the activities remain relatively stable.The southern part of the study area is generally subject to erosion,while the northern part shows some siltation.Nearshore samples are influenced by the combined ef-fects of coastal currents,tides,and tidal flows,resulting in stronger hydrodynamic conditions.In offshore areas,deeper waters and weaker tidal forces lead to less dynamic conditions and lower sedimentation rates.This study has important practical significance for local oyster reef protection and ecological restoration,as well as for the ad-justment of the boundaries of protected areas.关键词
潮间带/牡蛎礁/沉积环境/环境监测Key words
intertidal zone/oyster reef/sedimentary environment/environmental monitoring分类
海洋科学引用本文复制引用
张刚,车文越,刘强..江苏海门蛎岈山牡蛎礁沉积环境特征与评价[J].海洋地质前沿,2025,41(7):12-20,9.基金项目
江苏省林业发展专项资金项目(苏财资环[2022]18号) （苏财资环[2022]18号）
江苏省自然资源发展专项资金(海洋科技创新)项目(JSZRHYKJ202010) （海洋科技创新）
