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In South Korea, population decline has emerged as a serious social issue in recent years, posing a significant challenge to the nation's future. Particularly in rural areas, population decline has exacerbated concerns about regional extinction. Hence, this study aims to analyze existing research trends on population decline and regional extinction, with the intention of proposing future research directions. According to the results of the TF-IDF analysis, key terms such as centrality, change, population, regional extinction, and population structure were deemed significant. Social Network Analysis(SNA) revealed that population decline was closely associated with terms like population, locality, and decline, while regional extinction was linked to locality, issues, and population. Topic analysis identified population decline topics such as population, decline, and change, and regional extinction topics such as population, locality, and decline. Additionally, low birth rate topics included population, locality, South Korea, and aging topics included locality, local government, and population decline. Based on these findings, future research directions include studies on marriage and childbirth, research on the era of youth, studies on the elderly and aging, development strategies for local governments, and research on the causes and countermeasures of population decline and regional extinction.
Dong‐Hwan Kim (Sun,) studied this question.