[en] Marine ranching, which are artificially constructed nearshore ecosystems, increase carbon sequestration efficiency through bioremediation techniques such as stock enhancement and artificial reef deployment. Marine ranching enhances carbon sequestration but lacks robust evaluation methods. This article first develops a transferable framework for evaluating carbon sequestration in marine ranching by integrating ecosystem carbon budgets, dynamic carbon cycling, and the effects of species enhancement and fisheries management, and then applies this framework to the Beibu Gulf to demonstrate its generalisability and to identify the primary drivers. Based on field survey data, were developed Ecopath carbon mass models for a marine ranching and a nearby control area and fitted Ecosim models to simulate 12 stock enhancement-fishing scenarios combined with logarithmic mean Divisia index (LMDI) analysis. The results revealed that current artificial reef deployment increased the carbon flux and total carbon sequestration in the marine ranching area by 2.52 and 3.43 times compared with those in the control area, respectively. The “Mytilus + fishing” scenario (releasing Mytilus while maintaining current fishing) was simulated to achieve a high peak carbon sequestration efficiency of 2.21 times that of the baseline scenario. LMDI analysis revealed that expansion of the biomass scale compared to the community structure was the primary driver of carbon sequestration in all scenarios (>90.99 % contribution). Given the growing need for fisheries management to incorporate carbon sequestration considerations, particularly in marine ranching and other coastal ecosystems, the paper conclude by discussing the strengths and potential limitations of this framework and suggest directions for future development.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Guo, Wei; Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin, China ; Key Laboratory of Smart Breeding (Co-Construction by Ministry and Province, Ministry of Agriculture and Rural Affairs), Tianjin Agricultural University, Tianjin, China ; Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Feng, Jie; North China Sea Marine Forecasting and Hazard Mitigation Center, Ministry of Natural Resources, Qingdao, China ; Shandong Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation, Qingdao, China
Wang, Haiyan; Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Zhang, Zhen; Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Liang, Shuang ✱; Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin, China ; Key Laboratory of Smart Breeding (Co-Construction by Ministry and Province, Ministry of Agriculture and Rural Affairs), Tianjin Agricultural University, Tianjin, China
Zhang, Tao ✱; Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Yu, Haolin ✱; Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS) ; Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
✱ These authors have contributed equally to this work.
Language :
English
Title :
Evaluating bio-carbon sequestration in Beibu Gulf marine ranching areas via EwE modelling and LMDI analysis
This research was supported by the National Key R&D Program of China (Grant No. 2022YFD2401301), the Primary Research and Development Plan of Guangxi Province (Grant No. GuiKe AB21220064), the National Natural Science Foundation of China (Grant No. 42306151), the Shandong Postdoctoral Science Foundation (Grant No. SDCXZG202301009), the Tianjin Major Special Project for Seed Industry Innovation (Grant No. 24ZXZYSN0001), and the China National Offshore Oil Corporation Marine Environment and Ecological Protection Public Welfare Foundation (Grant No. CF-MEEC/TR/2025-13).
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