海洋渔业2025，Vol.47Issue(4)：471-483,13.
基于Ecopath模型的莱州湾生态系统结构和功能的年代际变化研究
Study on interdecadal changes of ecosystem structure and function in Laizhou Bay based on Ecopath model
摘要
Abstract
In order to explore the interdecadal changes of the Laizhou Bay ecosystem,Ecopath with Ecosim(EwE)software based on the relevant data of Laizhou Bay in the 1980s and 2020s was used to construct the Ecopath model of Laizhou Bay in the 1980s and 2020s respectively.The results showed that there were two food chains:detritus food chain and grazing food chain,the energy flow was mainly concentrated in the lower trophic level,and the energy flow pattern conformed to the pyramid decreasing law.Compared with the 1980s,the trophic level of the ecosystem functional group of the Laizhou Bay ecosystem in the 2020s decreased,and the biomass was reduced;the amount of detritus and total system fluxes flowing into the Laizhou Bay in the 2020s decreased,resource recycling efficiency increased,total primary production/total respiration and net system production decreased,Finn's circulation index and Finn's average path length increased,and the connectivity index increased.Results showed that compared to the 1980s,the size of the Laizhou Bay ecosystem decreased in the 2020s,and the stability of the ecosystem increased.关键词
莱州湾/Ecopath模型/能量流动/营养结构Key words
Laizhou Bay/Ecopath model/energy flow/trophic structure分类
农业科技引用本文复制引用
高紫倩,田永军..基于Ecopath模型的莱州湾生态系统结构和功能的年代际变化研究[J].海洋渔业,2025,47(4):471-483,13.基金项目
国家自然科学基金(41930534) （41930534）
