This dataset includes:(1) Table S1. Time-series of total mass fluxes, POC content, POC fluxes, Lithogeinic matter content, lithogenic matter flux, C/N mole ratio,as well as the POC isotopic compositions (δ¹³C, F_m) for sediment trap intercepted sinking particles (n = 59) in the northern South China Sea basin . (2) Table S2. Time-series monthly dust deposition (dry+wet) at station SCS-N of northern South China Sea basin. (3) Table S3. POC content and radiocarbon isotopic compositions for sediment trap intercepted bulk organic carbon from the South China Sea supplementary to one-year time series (2014-2015) published in Blattmann, T.M. et al., 2018. Geophysical Research Letters, 45(17): 9077-9086. (4) Table S4. Time-series clay mineral content and compositions for sediment trap intercepted sinking particles from the South China Sea supplementary to one-year time series (2009-2010) published in Schroeder A. et al., 2015 . Earth Planet. Sci. Lett. 430: 30–42. The dataset is archived in .xlsx data format, consists of four data files with data size of 34 KB.

Carbon fibers

Particulate organic carbon

10.5281/zenodo.6526368

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Biogeochemistry of sedimentary organic matter in the Yongjiang River estuary in the southern part of Hangzhou Bay, China, since the Late Pleistocene

Journal of Oceanology and Limnology (2024)

Dongqin Huang Xiaolong Li Zilong Li Pei Sun Loh Jianxiong Hu

Biogeochemistry

Sedimentary organic matter

10.1007/s00343-023-2372-6

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Accelerated export of terrestrial organic carbon to the Chukchi Sea since pre-industrial times

Bassem Jalali Marie‐Alexandrine Sicre Jian Ren Zhongqiao Li Youcheng Bai

Abstract. The on-going global warming is causing rapid changes in the carbon cycle of the Arctic. Yet the response of the Arctic to these environmental changes are not fully understood. In this study, we investigate bulk organic parameters (TOC, TN, δ13Corg, δ15N, C/N) and terrestrial n-alkanes (TERR-alkanes) from 19 surface sediments and 5 210Pb-dated sediment cores covering up to the last three centuries from the Chukchi Sea. Downcore profiles indicate increasing OC since the beginning of the Industrial Era in all cores. They also show higher TOC and TN values in southern Chukchi Sea cores coincident with decreasing δ13Corg indicating an increasing contribution of terrestrial OC that is confirmed by TERR-alkanes. Comparison with regional paleo-records and instrumental data emphasize the key role of air temperature and sea ice cover on the OC cycle and vegetation of the surrounding landmasses.

Carbon fibers

10.5194/egusphere-2025-325

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Assessment of sedimentary heterocyst glycolipids as tracers of freshwater input to the Changjiang Estuary and East China Sea

Chemical Geology (2019)

Manyu Kang Linghui He Daidu Fan Jianfang Chen Guodong Jia

10.1016/j.chemgeo.2019.05.015

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The distribution and enrichment of trace elements in surface and core sediments from the Changjiang River Estuary, China: Evidence for anthropogenic inputs and enhanced availability of rare earth elements (REE)

Marine Pollution Bulletin (2023)

Xiaoyu Zhang Wen Du Zhijie Xu Andrew B. Cundy Ian W. Croudace

Huge amount of trace metals emitted through manmade activities are carried by the Changjiang River into the East China Sea. Most of them deposit in the Changjiang River Estuary and threaten the regional aquatic environment. In this study, major and trace elements of 34 archive surface sediments and two cores are examined. Sequential extraction procedures were also performed on surface sediments from 12 sites. We found that Tl, Tm, Er show distinct accumulation in surface sediments in the order of Tm > Tl > Er. Particularly, abnormally elevated HREE are observed mainly in those sites near the mouth of the estuary. Most elements exhibit an obvious reduction in the upper 30 cm of core B8, reflecting a decrease of sediment discharge from Changjiang River runoff. The increase of some trace elements recorded in the upper 20 cm of core C3 demonstrates a distinct local anthropogenic input in recent years.

Chine

Trace element

Trace metal

10.1016/j.marpolbul.2023.115082

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A comparison of in-situ iron enrichment experiments in the three HNLC regions

Jianfang Chen

This paper provides a comparison of in situ iron enrichment experiments in the HNLC regions, namely the Equatorial Pacific, Antarctic Southern Ocean and Subarctic Pacific. These experiments indicated that the increase of iron supply consistently resulted in elevating phytoplankton biomass and primary productivity, and confirmed that iron indeed limited phytoplankton growth. However, there were different responses to iron enrichment in different regions, and the flux of carbon from the atmosphere to the deep sea was unknown. Therefore, whether iron fertilization was a viable mechanism to sequestrate greenhouse gas CO_2 still remained uncertain. Additionally, this paper illustrates the relationships of iron limitation with light limitation, silicate limitation and grazing pressure.

Iron fertilization

Subarctic climate

Grazing pressure

Primary productivity

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Summer nutrients structure and phytoplankton growth under the influence of freshwater-saline water mixing in the Changjiang River Estuary

EGUGA (2015)

Ying Liu Kui Wang Jianfang Chen

Saline water

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