Résumé
Ten years after the Great East Japan Earthquake, reconstruction projects are progressing in the affected areas and new towns are being formed. However, the recent spread of COVID-19 infection is thought to have affected interactions among residents. In this study, we conducted a multiple-choice questionnaire survey in the Taro district of Miyako City, Iwate Prefecture, which was severely damaged by the Great East Japan Earthquake, to investigate residents' social capital. Cross-tabulations, chi-square tests, and residual analysis revealed the following trends. First, most respondents indicated that the frequency of interaction with local residents and community activities decreased or remained the same after the earthquake. Second, Changes in residents' social capital compared to pre-disaster levels are significantly related to their social capital now, 10 years after the earthquake. Finally, respondents with no roommates and female respondents showed a higher rate of decline in social capital compared to pre-disaster levels. In the disaster-affected areas, the importance of social capital is becoming increasingly recognized for promoting future reconstruction community planning and inhibiting solitary death. It is necessary to respond to residents whose social capital is likely to decline more than before the disaster, such as women and those who live alone. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023. All rights reseverd.