江苏省海门牡蛎礁空间分布特征及碳效应研究OA

Under the context of the spatial distribution characteristics and carbon effects of oyster reefs in Hai-men,Jiangsu,we explored the influence of oyster reefs in Haimen,on marine carbon sequestration capacity.A carbon storage estimation model for oyster reefs was established to analyze their spatial distribution patterns and the spatiotemporal variations in carbon storage,as well as to estimate their carbon sequestration potential.Results indicate that oyster reef carbon storage and distribution were influenced by multiple factors in significant spatial heterogeneity.Specifically,the distributions of total carbon and inorganic carbon content across layers were relat-ively uneven,while organic carbon content showed a more uniform distribution.The organic carbon content in the substrate sediments of oyster reefs was relatively balanced,although overall sediment composition fluctuated con-siderably,exhibiting a vertical trend of decrease-increase-decrease in boreholes.Based on carbon storage vari-ation methods and field monitoring data,the estimated carbon sequestration capacity of oyster reefs in Jiangsu Haimen was 1.37 kg/m2.Oyster reefs significantly enhanced the marine carbon sequestration through three key processes:calcification,biological assimilation,and biodeposition.Among them,the carbon sequestered via calci-fication was particularly prominent,offering novel perspectives and methodologies for improving carbon sink ca-pacity in marine ecosystems.