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2018 Fiscal Year Annual Research Report

Sustainable development of Bangladeshi rural communities by integrated utilization of groundwater and fish ponds

Research Project

Project/Area Number 16K15005
Research InstitutionKyoto University

Principal Investigator

宇波 耕一  京都大学, 農学研究科, 准教授 (10283649)

Project Period (FY) 2016-04-01 – 2019-03-31
Keywordsバングラデシュ / 養魚池 / 浅層地下水 / 稲作灌漑 / コモンズ / ロバスト最適化 / 水質動態 / 国際研究者協力
Outline of Annual Research Achievements

本研究は、個人所有の養魚池が非常に多く存在するバングラデシュの水稲二期作地帯を対象とし、地下水資源、養魚、稲作に関する持続的な最適戦略の導出を試みるものである。研究代表者と研究協力者は、2018年度には2回、バングラデシュへ渡航した。
具体的な対象地域は、ジャマルプル市近郊に設定した重点集落と不圧帯水層をコモンズとして共有する範囲である。3箇所の水位・水温観測井、ならびに、2箇所のパルスロガー付き転倒マス型雨量計を運用した結果、その範囲が明らかとなった。そして、重点集落の人工貯水池12基、ならびに、その他のいくつかの水体について、水質各項目、構造諸元、利用目的、所有・管理形態、棲息する生物などを調査した。12基の人工貯水池のうち、養魚をもっぱらの目的とする1基に着目し、水位、水温、溶存酸素の自動観測を含む重点的な水質調査、およびに、冬季に地下水を導入してインド亜大陸における代表的な食用コイ3 種を栽培する実験を行った。対照地区として設定した滋賀県甲賀市の今郷地区においても、自動観測を継続し、2018年度内に9回の現地調査を行った。
以上のフィールド調査にもとづき、(1)養魚池水質の日周期動態に関するシステム解析および今郷地区の溜池との比較、(2)養魚池を運用する管理者レベルの意思決定支援に対するロバスト最適化理論の適用について、学術論文として公表した。また、(3)灌漑用ポンプと土水路による水田と人工貯水池への地下水配水システムに関し、開水路水理学と微分方程式論にもとづき、定常状態間の遷移について検討した。その結果を、大学院生が2018年11月に奈良市で開催されたPAWEES国際会議で口頭発表し、さらに、修士論文としてとりまとめた。

  • Research Products

    (27 results)

All 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results) Book (4 results) Funded Workshop (1 results)

  • [Int'l Joint Research] RARS Jamalpur, BARI(バングラデシュ)

    • Country Name
      BANGLADESH
    • Counterpart Institution
      RARS Jamalpur, BARI
  • [Int'l Joint Research] Mutah University(ヨルダン)

    • Country Name
      JORDAN
    • Counterpart Institution
      Mutah University
  • [Int'l Joint Research] Universiti Putra Malaysia(マレーシア)

    • Country Name
      MALAYSIA
    • Counterpart Institution
      Universiti Putra Malaysia
  • [Int'l Joint Research] University of Mosul(イラク)

    • Country Name
      IRAQ
    • Counterpart Institution
      University of Mosul
  • [Int'l Joint Research] University of Delhi(インド)

    • Country Name
      INDIA
    • Counterpart Institution
      University of Delhi
  • [Journal Article] Prototype and model of solar driven desalination plant in arid environment2019

    • Author(s)
      Unami K, Osama M, Fujihara M
    • Journal Title

      Thermal Science

      Volume: - Pages: 97-97

    • DOI

      https://doi.org/10.2298/TSCI180604097U

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Time periodic optimal policy for operation of a water storage tank using the dynamic programming approach2019

    • Author(s)
      Unami K, Mohawesh O, Fadhil RM
    • Journal Title

      Applied Mathematics and Computation

      Volume: 353 Pages: 418-431

    • DOI

      https://doi.org/10.1016/j.amc.2019.02.005

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] マルコフ連鎖による連続干天日数のモデル化2019

    • Author(s)
      宇波耕一
    • Journal Title

      土地改良の測量と設計

      Volume: 88 Pages: 22-27

  • [Journal Article] Holistic water quality dynamics in rural artificial shallow water bodies2018

    • Author(s)
      Alam AHMB, Unami K, Fujihara M
    • Journal Title

      Journal of Environmental Management

      Volume: 223 Pages: 676-684

    • DOI

      10.1016/j.jenvman.2018.06.076

    • Peer Reviewed
  • [Journal Article] A singular stochastic control model for sustainable population management of the fish-eating waterfowl Phalacrocorax carbo2018

    • Author(s)
      Yaegashi Y, Yoshioka H, Unami K, Fujihara M
    • Journal Title

      Journal of Environmental Management

      Volume: 219 Pages: 18-27

    • DOI

      https://doi.org/10.1016/j.jenvman.2018.04.099

    • Peer Reviewed
  • [Journal Article] Numerical computation of robust optimal harvesting policy in a fish pond under uncertainty2018

    • Author(s)
      Ndede EO, Unami K, Fujihara M
    • Journal Title

      Journal of Rainwater Catchment Systems

      Volume: 24 Pages: 33-36

    • Peer Reviewed
  • [Journal Article] A unique value function for an optimal control problem of irrigation water intake from a reservoir harvesting flash floods2018

    • Author(s)
      Unami K, Mohawesh O
    • Journal Title

      Stochastic Environmental Research and Risk Assessment

      Volume: 32 Pages: 3169-3182

    • DOI

      10.1007/s00477-018-1527-z

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A discrete time dynamic programming problem for a plant growth model with controlled parameters2018

    • Author(s)
      Unami K
    • Organizer
      農業農村工学会応用水理研究部会
  • [Presentation] On a hyperbolic-elliptic system having discontinuous self-similar solutions2018

    • Author(s)
      Yoshioka H
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] Stochastic optimal impulse control policy for management of seasonal fish-eating bird population dynamics2018

    • Author(s)
      Yaegashi Y
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] Multi-state Markov chains applied to drought management in rainfed agriculture2018

    • Author(s)
      Unami K
    • Organizer
      Modeling and Analysis of Time Series Data in Math-Agro Sciences, IMI Workshop, Kyushu University
    • Int'l Joint Research
  • [Presentation] 豪雨による溜池決壊を想定した決定論的動的計画問題2018

    • Author(s)
      藤倉大和
    • Organizer
      第26回日本雨水資源化システム学会
  • [Presentation] 塩性乾燥地域における灌漑ナツメヤシ成長の一般化加法モデル2018

    • Author(s)
      新井芽丹
    • Organizer
      第26回日本雨水資源化システム学会
  • [Presentation] A time-dependent stochastic optimal impulse control model for management of fish-eating bird2018

    • Author(s)
      Yaegashi Y
    • Organizer
      第26回日本雨水資源化システム学会
  • [Presentation] Deterministic dynamic programming for operation of micro irrigation scheme2018

    • Author(s)
      Unami K
    • Organizer
      The Eighth Scientific Agricultural Conference ESAC-2018
    • Int'l Joint Research / Invited
  • [Presentation] Convergence to steady states of open channel flows in a paddy irrigation canal system with ponds2018

    • Author(s)
      Mean S
    • Organizer
      PAWEES & INWEPF International Conference 2018
    • Int'l Joint Research
  • [Presentation] A prototype of micro irrigation scheme in the Jordan Rift Valley and its mathematical modelling2018

    • Author(s)
      Unami K
    • Organizer
      International Green Capitals Congress
    • Int'l Joint Research / Invited
  • [Book] Modelling and Analysis of Time Series Data in Math-Agro Sciences, The Mathematics for Industry Research2019

    • Author(s)
      Unami K, Chono C, Yoshioka H, Tagami D, Shirai T
    • Total Pages
      305
    • Publisher
      Institute of Mathematics for Industry, Kyushu University
  • [Book] New Trends in Emerging Complex Real Life Problems2018

    • Author(s)
      Yaegashi U, Yoshioka H, Unami K, Fujihara M
    • Total Pages
      471
    • Publisher
      Springer
  • [Book] Environmental Pollution, Water Science and Technology Library2018

    • Author(s)
      Unami K, Mabaya G, Alam AHMB, Fujihara M
    • Total Pages
      571
    • Publisher
      Springer Singapore
  • [Book] International Green Capitals Congress2018

    • Author(s)
      Unami K, Mohawesh O
    • Total Pages
      240
    • Publisher
      Konya Metropolitan Municipality
  • [Funded Workshop] Modeling and Analysis of Time Series Data in Math-Agro Sciences: IMI Workshop of the Joint Research Projects2018

URL: 

Published: 2019-12-27  

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