Economic Loss due to Crop Damage by Flood Inundation: an Integrated Flood Risk Assessment Framework

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Other Title
  • 洪水氾濫シミュレーションによる農地の作物被害の推定

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Abstract

Identifying the agricultural risk by flooding based on the quantified hazard is vital when addressing the flood disaster problem. This paper carries out the crop damage (risk) estimation by flood based on the flood inundation (hazard) simulation. The flood inundation model developed here can simulate not only the flood inundation by bank overtopping and rainwater, but also the drainage process through the river network system. After simulating the flood inundation process, the crop damage by flood is estimated using a vulnerability index, that is, the relationship among the crop damage ratio, the inundation depth and the inundation duration. Afterwards, the economic loss is estimated with the average crop yield per area and the retail price of the rice per weight (kg) of Shiga Prefecture. The Hinogawa River, Shiga, Japan and Ryuou Town in the catchment are selected as case study sites. This paper has established a framework to assess flood risk in a river basin from rainfall, rainfall-runoff, flood inundation, drainage and the economic loss estimation.

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Details 詳細情報について

  • CRID
    1050282676916974464
  • NII Article ID
    120002515095
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/129345
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB
    • CiNii Articles

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