,inР creasingcarbonresidencetimeinanoceancarbonpoolwouldbebenefitablefortheoceancarbonsink;Р Meanwhile,ifcarbonisagingduringthecarboncycles,itmeansthattheitwillcostalongertimeforРР CO2assimilationtransformation,sequestrationintheocean,duringwhichtherearemorechancesforРР CO2todegassingintotheatmosphere.Theprocessesarenotpositiveforachievingarapidcarbonsink.Р OurstudywouldshednewlightonunderstandingtheoceancarbonsinkinthecontextofcarbonneutralР itygoalsthroughanalyzingthe14CdataintheChinesemarginalseas,providinganefficientmeantofindР thehumaninducedbutnaturebasedsolutionsforachievingthecarbonneutrality.Р Keywords: carbonneutrality;oceancarbonsink;Chinesemarginalseas;organiccarbon;14CageРР 责任编辑 徐 环