Blue carbon is the carbon captured by the world's oceans and coastal ecosystems. The carbon captured by living organisms in oceans is stored in the form of biomass and as sediments from mangroves, salt marshes and sea-grasses. Soil organic carbon has been contributed both by microbial degradation of litters or detritus and sewage effluent, aquaculture run off, industrial wastes as well. Here to consider it under the domain of blue carbon the biogenic part preferably those obtain by microbial degradation of coastal vegetation should have certain % over the carbon being contributed by other means...

Definitely... SOC is the part of blue carbon... Blue carbon comprise both that are sedimented beneath the ocean by means of debris whatever from plant strata or animal strata, as well as the the carbon that get dissolved into the oceanic water as carbonic acid and then goes via bicarbonate chain. SOC is the intricate part of both-biota debris and industrial origin. As such it is bi virtue of its formation is under the domain of Blue carbon in the coastal areas.