胡杨媒介话语的知识生产OACHSSCD

Populus euphratica,as an ecological miracle and cultural symbol,has unique significance in border governance and national discourse construction.Based on Foucault's knowledge archaeology method and combined with his discourse theory,this study analyzes the textual reports of People's Daily from 1949 to 2024,and explores the evolutionary logic of Populus euphratica media discourse.Re-search has found that the discourse of Populus euphratica has undergone three stages of transformation,with its symbolic meaning shift-ing from ecological symbols to a complex that comprehensively carries governance needs,economic factors,and educational guidance,presenting a knowledge-based characteristic with fracture and overlap.The evolution path not only reflects the deep interaction between ecological civilization and border governance,but also exposes the risk of symbol generalization.It needs to maintain explanatory vitali-ty through diachronic sorting and interdisciplinary narrative,providing cultural references for the governance of Chinese characteristics under the discourse system.