水产学报2025，Vol.49Issue(5)：92-106,15.DOI:10.11964/jfc.20221013758
基于Ecopath模型的增殖放流对南朗水域生态系统的影响
Effect of stock enhancement using Ecopath model on the ecosystem of Nanlang waters
摘要
Abstract
The Pearl River estuary fishery is one of China's four renowned fishery waters and is also among the most human-impacted aquatic regions.To assess the effects of stock enhancement on the ecosystem and ecological capacity of estuarine waters,this study utilized historical and contemporary survey data on fishery resources and ecological envrionment.A 6-year material balance model of the Nanlang waters was constructed using Ecopath with Ecosim(ewe)6.5 software to systematically analyze changes in ecosystem energy flow,general characteristics,and food web structure.The results indicated that in 2005 and 2016-2020,energy flow in Nanlang waters was primarily concentrated in trophic levels Ⅰ-Ⅳ,with a consistent nutri-tional structure.The grazing food chain and detritus food chains were the dominant energy pathways,characterized by high energy utilization rates among primary producers but low overall energy flow conversion efficiency.The ecosystem was in a development stage.Compared to 2005,fishery resources biomass,trophic levels,and system energy conversion efficiency increased from 2016 to 2020.The total primary production to respiration ratio(TPP/TR)of the system gradually approached 1,while the system connectivity index(CI)and system omnivory index(SOI)slightly rose,indicating a maturing ecosystem with an expanding overall scale.Additionally,the ecological capacity of Lateolabrax japonicus and Acanthopagrus latus increased by 5 and 94 times,respectively,in 2020 compared to 2005.In conclusion,stock enhancement not only enhances the stability,complexity,and maturity of the estuarine ecosystem but also significantly improves its ecological capacity.关键词
Ecopath模型/增殖放流/生态系统/营养结构/生态容纳量/南朗水域Key words
Ecopath moldel/stock enhancement/ecosystem/nutritional structure/ecological carrying capacity/Nanlang waters分类
水产学引用本文复制引用
冯瑞玉,陶峰,郭禹,秦传新,孙金辉,吴一桂,王静..基于Ecopath模型的增殖放流对南朗水域生态系统的影响[J].水产学报,2025,49(5):92-106,15.基金项目
国家重点研发计划"蓝色粮仓科技创新"专项(2018YFD0900905) （2018YFD0900905）
国家自然科学基金(32160863) （32160863）
海南省自然科学基金创新团队(321CXTD446) （321CXTD446）
防城港市重点研发计划(防科AB21014021) （防科AB21014021）
中央级公益性科研院所基本科研业务费专项(2020SY01) National Key R & D Program"Blue Granary Science and Technology Innovation"(2018YFD0900905) （2020SY01）
National Natural Science Foundation of China(32160863) （32160863）
Innovation Team of Hainan Province(321CXTD446) （321CXTD446）
Fangcheng-gang Key R & D Program(AB21014021) （AB21014021）
Central Public-interest Scientific Institution Basal Research Fund,CAFS(2020SY01) （2020SY01）
