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Historical chart and dataset showing Japan population growth rate by year from 1961 to 2023.
Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
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Shrinking cities due to low birthrates and aging populations represent a significant urban planning issue. The research question of this study is: which economic, social, and educational factors affect population decline in Japanese shrinking cities? By modeling shrinking cities using the case of Japanese cities, this study aims to clarify the indicators that affect the population change rate. The study employed Bayesian network analysis, a machine learning technique, using a dataset of economic, social, and educational indicators. In conclusion, this study demonstrates that social and educational indicators affect the population decline rate. Surprisingly, the impact of educational indicators is more substantial than that of economic indicators such as the financial strength index. Considering the limitations in fiscal expenditures, increasing investment in education might help solve the problem of shrinking cities because of low birthrates and aging populations. The results provide essential insights and can function as a planning support system.
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List of SNPs for which natural selection was detected by Relate.
Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
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Okinotorishima Island, an isolated remote table reef island in the southernmost territory of Japan, provides an excellent site to examine the effect of only global stress, as there are no local human stresses present. Yamamoto et al. (2023) established 17 fixed quadrats (1×1 meter) on 9 knolls in the shallow lagoon of Okinotorishima Island, and observed coral population every May from 2006 to 2015. This dataset compiles data on coverage and number of colonies of Acropora and co-occurring corals published in Yamamoto et al. (2023). Yamamoto, H., Kawasaki, T., Tamura, K., Kanyama, T. Hosono, T., Fudo, M., Omori, M., Kayanne, H.: Decline in the Acropora population due to repeated moderate disturbances in Okinotorishima Island, Japan. Glaxea: Jour. Coral Reef Studies 25: 18-30 (2023). doi: 10.3755/galaxea.G26-3
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Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
License information was derived automatically
Historical chart and dataset showing Japan population growth rate by year from 1961 to 2023.