Centennial-scale evolution of organic carbon sources and burial in the northern coastal mud area of the Shandong Peninsula and its response to human activities
Randomized trial reveals changes in organic carbon sources due to human activities in a coastal area, suggesting environmental implications.
Key Points
This research aims to understand the evolution of organic carbon sources and burial in the Shandong Peninsula's mud area and how it relates to human activities.
Analyzed sediment borehole data with 210 Pb-derived sedimentation rate of 0.63 cm/a
Evaluated multiple proxy parameters including grain size, total organic carbon, and stable isotopes
Reconstructed centennial-scale organic carbon sources and burial patterns
Marine phytoplankton contributed 56.3% of organic carbon on average
Total organic carbon content increased from 0.31% to 0.41% since 1950
Terrestrial organic carbon contribution decreased from 52.6% to 34.7% due to dam construction on the Yellow River