FUNDAMENTAL STUDY ON WATER STORAGE FUNCTION OF ABANDONED PADDY FIELD ON SMALL RIVER FLOODPLAIN

  • IMAI Yota
    徳島大学大学院 先端技術科学教育部知的力学システム工学専攻
  • MITSUHASHI Hiromune
    兵庫県立人と自然の博物館 自然・環境マネジメント研究部/生態研究グループ
  • KAMADA Mahito
    徳島大学大学院 社会産業理工学研究部 社会基盤デザイン系
  • MUTO Yasunori
    徳島大学大学院 社会産業理工学研究部 社会基盤デザイン系

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Other Title
  • 普通河川周辺の耕作放棄水田が有する洪水一時貯留機能に関する基礎的検討

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<p> A two-dimensional flood flow analysis was conducted to investigate the characteristic of inundation and the water storage function of abandoned paddy fields along Tai River, small river, in Toyooka City, Hyogo Prefecture, Japan. The simulation results showed that 25% of total discharge was stored in abandoned paddy fields during the event of 1/30-year rainfall. Furthermore, 22% of peak discharge was cut and stored by abandoned paddy fields. These water storage functions were provided weir and water bar to reduce velocity of flood in the abandoned paddy field, set by local people.</p>

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