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Holocene Organic Carbon Source−Sink Dynamics in the North Yellow Sea: Influences of East Asian Summer Monsoon and Sea-Level Change

Author

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  • Jun Liu

    (Haikou Marine Geological Survey, China Geological Survey, Haikou 571127, China
    Observation and Research Station of South Yellow Sea Earth Multi-Sphere, Ministry of Natural Resources, Yantai 264000, China
    College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Shuyu Wu

    (Observation and Research Station of South Yellow Sea Earth Multi-Sphere, Ministry of Natural Resources, Yantai 264000, China
    Yantai Coastal Geological Survey, China Geological Survey, Yantai 264000, China)

  • Jie Zhang

    (Observation and Research Station of South Yellow Sea Earth Multi-Sphere, Ministry of Natural Resources, Yantai 264000, China)

  • Maoguo An

    (Observation and Research Station of South Yellow Sea Earth Multi-Sphere, Ministry of Natural Resources, Yantai 264000, China)

  • Yongcai Feng

    (Yantai Coastal Geological Survey, China Geological Survey, Yantai 264000, China)

  • Jianwei Sun

    (Yantai Coastal Geological Survey, China Geological Survey, Yantai 264000, China)

Abstract

The Holocene evolution of organic carbon (OC) sources in the North Yellow Sea remains poorly constrained. In this study, a sedimentary dataset from core WHD01 retrieved from the Shandong Peninsula Mud Wedge is presented. After correcting grain-size, diagenetic and provenance biases in geochemical proxies and removing diagenetic offsets of sedimentary δ 13 C signals, the MixSIAR Bayesian mixing model was used to quantify three OC endmembers. The results reveal three distinct evolutionary stages of OC composition: pre-10 cal ka B.P. dominated by terrestrial C 3 OC; 10–4.2 cal ka B.P. dominated by marine OC during rapid sea-level rise; post-4.2 cal ka B.P. marine-derived OC remained dominant while C 3 terrestrial and estuarine OM increased alongside enhanced OC burial, driven by anthropogenic catchment erosion and improved organic preservation. Temporal shifts in OC source apportionment and burial flux are tightly coupled to East Asian Summer Monsoon variability and sea-level change, with conspicuous OM compositional reorganizations coinciding with the 8.2 ka and 4.2 ka climatic cold events.

Suggested Citation

  • Jun Liu & Shuyu Wu & Jie Zhang & Maoguo An & Yongcai Feng & Jianwei Sun, 2026. "Holocene Organic Carbon Source−Sink Dynamics in the North Yellow Sea: Influences of East Asian Summer Monsoon and Sea-Level Change," Sustainability, MDPI, vol. 18(13), pages 1-23, June.
    • Handle: RePEc:gam:jsusta:v:18:y:2026:i:13:p:6482-:d:1975667
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