| 引用本文: | 李志林,张潇文,王晓霞,赵玉庭,张娟,王晓艳,秦华伟,陶慧敏,谷伟丽,苏博.山东北部近岸海域沉积物中酸可挥发性硫化物的分布特征研究[J].海洋科学,2026,50(2):28-36. |
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| 山东北部近岸海域沉积物中酸可挥发性硫化物的分布特征研究 |
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李志林, 张潇文, 王晓霞, 赵玉庭, 张娟, 王晓艳, 秦华伟, 陶慧敏, 谷伟丽, 苏博
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山东省海洋资源与环境研究院 自然资源部莱州湾海洋生态系统野外科学观测研究站, 山东 烟台 264006
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| 摘要: |
| 基于2024年7—8月山东北部近岸海域表层沉积物中酸可挥发性硫化物(acid-volatile sulfide, AVS)、有机碳等数据, 分析了该海域AVS的分布状况及影响因素, 结果表明: 山东北部近岸海域表层沉积物中AVS平均质量分数为(72.5±100) mg/kg, AVS质量分数存在明显的空间分布差异。径流、滨州港的有机质输入及渤海湾、滨州港形成的弱动力环境为滨州-东营北部海域AVS高值区的形成提供了物质基础和环境条件。黄河输入的有机质及河口水动力环境对沉积物氧化还原状态的影响是控制黄河口海域AVS含量和分布的关键因素。莱州湾沉积物AVS与有机碳含量的极显著正相关性及AVS高值中心较低的氧化还原电位表明径流、人类活动带来的有机质输入以及岸线、大型港口工程的阻挡对莱州湾AVS具有重要影响。烟台-威海北部海域较高的AVS含量及分布特征与该海域频繁的水产养殖等人类生产活动、黄海沿岸流的物质输运和沉降速率等因素有关。 |
| 关键词: 山东北部近岸海域 沉积物 AVS 分布特征 |
| DOI：10.11759/hykx20251209001 |
| 分类号:P734 |
| 基金项目:国家重点研发计划(2023YFC3108700) |
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| Distribution characteristics of acid-volatile sulfide in coastal sediments of northern Shandong |
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Li Zhilin, Zhang Xiaowen, Wang Xiaoxia, Zhao Yuting, Zhang Juan, Wang Xiaoyan, Qin Huawei, Tao Huimin, Gu Weili, Su Bo
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Observation and Research Station of Laizhou Bay Marine Ecosystem, MNR, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
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| Abstract: |
| Using acid-volatile sulfide (AVS) and organic carbon data obtained from surface sediments in the coastal waters of northern Shandong during July to August 2024, the spatial distribution patterns and influencing factors of AVS were investigated. The mean AVS content was (72.5±100) mg/kg, and pronounced spatial variability was observed across the study area. In the northern coastal waters of Binzhou and Dongying, elevated AVS levels resulted from organic matter input via runoff and Binzhou Port, coupled with weak hydrodynamic conditions imposed by Bohai Bay and port infrastructure. In the Yellow River estuary, AVS was governed primarily by riverine organic matter delivery and the estuarine hydrodynamic regime. A highly significant positive correlation between AVS and organic carbon content in Laizhou Bay sediments, together with the lower redox potential at the high-AVS center, suggested that organic matter input from runoff and anthropogenic activities, compounded by the obstructive effects of shoreline modifications and large-scale port construction, exerted a considerable influence on AVS accumulation in Laizhou Bay. In the northern waters of Yantai and Weihai, the elevated AVS content and its spatial distribution were associated with mariculture operations in the area, along with the material transport capacity and sedimentation rate of the Yellow Sea Coastal Current. |
| Key words: coastal waters of northern Shandong sediments AVS distribution characteristics |