<《論文》査読付き> 徳島県における農地の変化と洪水リスクへの影響に関する研究

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  • 徳島県における農地の変化と洪水リスクへの影響に関する研究
  • Farmland Changes in Tokushima Prefecture and Their Impact on Disaster Risk

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The purpose of the paper is to evaluate the disaster risk caused by the changes in farmland as a key part of the green infrastructure and its impact on disaster risk in Tokushima prefecture. We evaluated the risk using two factors: one is evacuation level based on volume of surface runoff (calculated according to land characteristics), and the other is the number of elderly households. From the analysis, high disaster risk areas were observed in the suburban periphery of the city of Tokushima and the small and widely dispersed farmland in the mountains. The high disaster area overlapped with the flood-prone area in the middle and lower sections of the Yoshinogawa river watershed. Therefore, maintenance of the farmland in these areas is important to mitigation of flooding that can increase disaster risk.

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