Marine ranching enhances ecosystem stability and biological carbon sequestration potential: insights from Ecopath with Ecosim model simulation of 30-year ecological path of a national marine ranching in China

作者：Jiale Yan, Yan Chen, Yingkun Cao, Jiamin Sun, Bin Wen, Gao Xiaowei, Gang Wang, Lixin Gong, Huixin Liu, Qian Li, Xiujin Liu, Jiabo Zhang, Zepeng Li, Futang Ma, Haien Zhang, Weidong Li, Zhe Pan · 发表于：Frontiers in Marine Science · 年份：2025 · DOI：10.3389/fmars.2025.1583896 · 被引用次数：10 · 研究领域：Marine and fisheries research、Coastal and Marine Management、Marine Bivalve and Aquaculture Studies

Introduction Marine ranching is an effective marine ecosystem protection measure that not only helps protect marine resources, but also has an important carbon sink function. Methods This study took the Haizhidu marine ranching in the Bohai sea of China as the research object, constructed 20 functional groups in the area, and used the ecosystem model Ecopath with Ecosim (EwE) and stable isotopes (δ13C and δ15N) to model the system, evaluate the biological structure, energy transfer efficiency, and ecological carrying capacity (ECC) of different functional groups in the system, and calculate the carbon sequestration potential when shellfish reach ECC and the impact of marine ranching construction on system stability and maturity. Results and Discussion The results of the study on the characteristic parameters of the marine ranching system show that in the Haizhidu marine ranching ecosystem, the functional group with the highest biomass is the sediment detritus functional group (37.75 t/km 2 ), followed by phytoplankton (21.40 t/km 2 ), and the lowest is the other pelagic fishes (0.26 t/km 2 ); the highest trophic level is the Platycephalus indicus (3.70), followed by the 3.43 of Sebastes schlegelii and cephalopods; the energy transfer efficiency is mainly concentrated in the trophic levels I and II. The simulation results of the shellfish ECC show that the ECC of shellfish in this system is 49.21 t/km 2 . When the system reaches this capacity, the carbon sequestration potentia...