基于LDA主题模型的渔业限额捕捞管理政策研究OA

The Total Allowable Catch(TAC)management system is one of the internationally important fisheries management policies,playing a crucial role in the sustainable utilization of fishery resources.This study uses the Latent Dirichlet Allocation(LDA)topic model to identify the in-depth content themes and latent semantics of Chi-na's TAC policies,and further analyzes the evolution of these themes.The results indicate that China's TAC pol-icies have undergone three stages:the initial stage,the rapid development phase,and the refinement stage.It is currently in the refinement stage.The themes identified include four categories:"Fishery Resource Conservation and Sustainable Utilization""Implementation and Management of TAC Policies""Multi-dimensional Strategies for TAC Policy Enforcement""Sea Area Management and Ecological Protection".The major turning point for all four themes occurred in 2015,marking a watershed when TAC policies focus transitioned from"conceptualization"to"practical implementation."The study suggests that while a preliminary institutional framework has been estab-lished,it requires continuous dynamic adjustments in response to evolving management needs.Corresponding im-provement recommendations are proposed based on the identified issues.This research clearly delineates the cur-rent status,thematic structure,and evolutionary trends of China's TAC policies,providing valuable references for future policy formulation and related research.