【摘要】 科学评估海洋渔业的碳汇能力，是在碳中和目标下促进中国海洋经济绿色、高效发展的基础。本文基于Sentinel-2遥感影像，利用支持向量机（Support Vector Machine,SVM）分类法对环渤海地区的浮筏、网箱、滩涂、池塘四类近海养殖区进行分类提取，结合提取结果创新一种海洋养殖渔业的碳汇核算模型，并测算环渤海地区近海养殖渔业的固碳潜力和不同类型养殖区对环渤海渔业碳汇的贡献。结果表明：(1)环渤海地区近海养殖渔业的年碳汇潜力约134万～168万t。其中，滩涂养殖区的总体碳汇潜力最大，约占环渤海地区的42%，浮筏养殖区、池塘养殖区、网箱养殖区则分别占比29%、28%、1%；从养殖区的单位面积固碳能力来看，浮筏养殖区能力最强，约是其他三类养殖区的1.4～1.7倍。(2)环渤海地区的近海渔业养殖主要集中于胶东、辽南、黄河口周边地区，其中胶东一带的碳汇潜力最大，约占整个环渤海地区的28%，可作为环渤海地区碳汇渔业的重点发展地区。本研究也可为中国海洋养殖渔业的碳汇核算提供技术支撑，为碳汇渔业的发展提供新参考。更多还原

【Abstract】 Scientific assessment of the carbon sequestration capacity of marine fisheries is the basis for promoting the green and efficient development of marine economy under the goal of carbon neutrality. Based on Sentinel-2 remote sensing images, we used the Support Vector Machine classification method to classify and extract the floating raft culture area, cage culture area, tidal flat culture area and pond culture area of the Bohai Rim Region(BRR). Based on the results of the extraction, we developed a new model for assessing the carbon sink of mariculture fisheries, and measured the carbon sequestration potential of culture and the contribution of different types of culture zones to the fisheries carbon sink in the study area. The results are as follows:(1) The carbon sequestration potential of inshore aquaculture can reach up to 1.34·106-1.68 · 106tons per year. The total carbon sequestration potential of tidal flat aquaculture is the largest, accounting for about 42% of the BRR’s total, the floating raft culture area, pond culture area and cage culture area accounted for 29%, 28% and 1% respectively; In terms of carbon sequestration potential per unit area, the floating raft culture zone has the strongest potential,which is about 1.4-1.7 times of the other three types of culture zones.(2) The coastal fisheries are mainly concentrated in the eastern part of Shandong, southern Liaoning and the mouth of the Yellow River. Eastern Shandong has the largest carbon sequestration potential, accounting for about 28% of the BRR’s total, could be a key area for the development of carbon sequestration fisheries around the Bohai Sea. This study can also provide technical support for the carbon sequestration accounting of marine industry in China, and for the development of carbon sequestration fisheries in the country.更多还原